divelab/Sys2Bench huggingface dataset:
Question: There are 10000 students in the particular school out of that 60% students are like science subject and of these , 20% are also like maths.If 20% of the students who like science and maths are girls students.then find out the number of girls student who like maths and science?
Options:
A)300
B)120
C)240
D)280
E)360
Rationale: total number of students=10000; Out of these 60% like science subject are =6000; Out of these 20% like maths subject=1200 ; out of these 1200 students 20% students are girls= 240
Answer: C
Question: A fair price shopkeeper takes 10% profit on his goods. He lost 70% goods during theft. His loss percent is:
Options:
A)72%
B)42%
C)32%
D)67%
E)22%
Rationale: Explanation:
Suppose he has 100 items. Let C.P. of each item be Re. 1.
Total cost = Rs. 100. Number of items left after theft = 30.
S.P. of each item = Rs. 1.10
Total sale = 1.10 * 30 = Rs. 33
Hence, loss % = 67/100 * 100 = 67%
Answer:D
Answer: D
Question: In how many ways can the letters of the word ghLOMN be rearranged such that the upper case letters always appear together?
Options:
A)232
B)198
C)111
D)123
E)144
Rationale: ghLOMN
LOMN will come together as a group which can be arranged in 4!=24ways.
LOMN,g,h can be arranged in 3!=6 ways.
total possible arrangements = 6*24=144ways
ANSWER:E
Answer: E
Question: A circular rim 28 inches in a diameter rotates the same number of inches per second as a circular rim 35 inches in diameter. If the smaller rim makes C revilutions per second, how many revilutions per minute does the larger rim makes in terms of C?
Options:
A)a) 48pi/C
B)b) 75m
C)c) 48C
D)d) 24C
E)e) C/75
Rationale: distance covered by a circular wheel per sec* = 2*pi* r * n
where n is number of revolution
So we know the smaller rim makes C rev per sec so the inches coverd SR per sec = 28 * pi* C
the problem the say SR rotates the same number of inches as the LR.
The inches covered by the LR per sec = 35 * pi*Y
So equate both u will get Y = 4/5 C
Theis is in sec we need the answer in min so 48C
answer is C
Answer: C
Question: Two pipes A and B can fill a cistern in 20 and 30 minutes respectively, and a third pipe C can empty it in 40 minutes. How long will it take to fill the cistern if all the three are opened at the same time?
Options:
A)19 1/7 min
B)15 1/7 min
C)17 1/7 min
D)7 1/7 min
E)7 2/7 min
Rationale: 1/20 + 1/30 - 1/40 = 7/120
120/7 = 17 1/7
ANSWER:C
Answer: C
Question: A symmetric number of an another one is a number where the digit are reversed. For instance, 123 is the symmetric of one of 321. Thus the difference of a number and its symmetrical must be divisible by which of the following?
Options:
A)4
B)5
C)6
D)7
E)9
Rationale: Let's consider the example of three digit symmetric numbers {abc} and {cba}. Three digit number can be represented as: {abc}=100a+10b+c and {cba}=100c+10b+a. The difference would be:
{abc}-{cba}=100a+10b+c-(100c+10b+a)=99a-99c=99(a-c).
Two digit: {ab} and {ba}. {ab}-{ba}=10a+b-(10b+a)=9a-9b=9(a-b)
Hence the difference of two symmetric numbers (2 digit, 3 digit, ...) will always be divisible by 9.
Answer: E.
Answer: E
Question: 1-1/2 of 2 = ?
Options:
A)1
B)2
C)¾
D)¼
E)none of these
Rationale: Ans will be 0
ANSWER:E
Answer: E
Question: If x is an integer, then x(x - 1)(x - k) must be evenly divisible by three when k is any of the following values except
Options:
A)-4
B)-6
C)-1
D)2
E)5
Rationale: if we put k=-1 we get:
X(x-1)(X+1) rearrange:(x-1)X(X+1)
so it looks like a sequenc,
if we assume that X =2 and put number from the answer then we get:
(x – 1)x(x – k)
k=5 =1.2.-3
k=2 =1.2.0
k=-1 =1.2.3
k=-4 =1.2.6
but when we put
k=-6 =1.2.8 not satisfied
so,answer is B
Answer: B
Question: There are 24 distinct numbers in set M, there are 28 distinct numbers in set N, and there are 12 distinct numbers that are in both sets M and N. Set H is the set containing the elements that are in at least one of sets M and N. How many elements are in set H?
Options:
A)39
B)40
C)51
D)58
E)63
Rationale: {Total} = {M} + {N} - {Both}
{Total} = 24 + 28 - 12 = 40.
Answer: B.
Answer: B
Question: Dacid obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?
Options:
A)87
B)99
C)68
D)82
E)75
Rationale: Average = (76 + 65 + 82 + 67 + 85)/5
= 375/5
= 75.
Answer:E
Answer: E
Question: Five carpenters can individually complete a particular task in 3, 4, 5, and 7 hours, respectively. What is the maximum fraction of the task that can be completed in forty-five minutes if four of the carpenters work together at their respective rates ?
Options:
A)11/15
B)3/5
C)11/30
D)47/75
E)5/9
Rationale: Farmer A, B, C, and D
A's rate: 1/3 job/hour
B's rate: 1/4 job/hour
C's rate: 1/5 job/hour
D's rate: 1/7 job/hour
By intuition we know that the three fastest farmers are A B and C.
As such
(1/3 + 1/4 + 1/5)*(4/5) = ?
47/75 or (D)
Answer: D
Question: If I walk at 3 kmph, I miss the train by 2 min, if however, I walk at 4 kmph. I reach the station 2 min before the arrival of the train. How far do I walk to reach the station?
Options:
A)4/5 km
B)9/5 km
C)4/8 km
D)4/9 km
E)4/1 km
Rationale: Explanation:
x/3 – x/4 = 4/60
x = 4/5 km
Answer: Option A
Answer: A
Question: What is x if x + 2y = 100 and y = 25?
Options:
A)25
B)50
C)75
D)100
E)4
Rationale: Substitute y by 25 in x + 2y = 100
x + 2(25) = 100
x + 50 = 100
If we substitute x by 50 in x + 50 = 100, we have 50 + 50 = 100. Hence
x = 50 correct answer B
Answer: B
Question: Determine a man’s present age if his present age is 125% of his age 10 years ago and 83.333% of his age 10 years from now.
Options:
A)76
B)97
C)50
D)99
E)82
Rationale: Explanation:
According to the question current age of the man is:
1.	125% of his age 10 years ago
2.	83.333% of his age 10 years from now
Let the current age of the man be x.
Therefore, equating the two equations generated:
125/100(x-10) = 250/3(x+10)
x = 50
ANSWER: C
Answer: C
Question: Two numbers are respectively 20% and 50% more than a third number. The percentage that is first of the second is?
Options:
A)45%
B)80%
C)78%
D)94%
E)68%
Rationale: I II III
120 150 100
150----------120
100-----------? => 80%
Answer:B
Answer: B
Question: Thirty men can do a work in 24 days. In how many days can 20 men can do the work, given that the time spent per day is increased by one-third of the previous time?
Options:
A)25 days
B)26 days
C)20 days
D)27 days
E)21 days
Rationale: D
27 days
Let the number of hours working per day initially be x. we have M1 D1 H1= M2 D2 H2
30 * 24 * x = 20 * d2 * (4x)/3 => d2 = (30 * 24 * 3)/(24 * 4) = 27 days.
Answer: D
Question: Three consecutive odd integers are in increasing order such that the sum of the last two integers is 11 more than the first integer. Find the three integers?
Options:
A)7, 9, 29
B)5,7,9
C)7, 9, 10
D)7, 9, 11
E)7, 9, 29
Rationale: Explanation:
Let the three consecutive odd integers be x, x + 2 and x + 4 respectively.
x + 4 + x + 2 = x + 11 => x = 5
Hence three consecutive odd integers are 5, 7 and9.
Answer:B
Answer: B
Question: The average runs scored by a batsman in 20 matches is 40. In the next 10 matches the batsman scored an average of 13 runs. Find his average in all the 30 matches?
Options:
A)31
B)46
C)88
D)13
E)12
Rationale: Total score of the batsman in 20 matches = 800.
Total score of the batsman in the next 10 matches = 130.
Total score of the batsman in the 30 matches = 930.
Average score of the batsman = 930/30 = 31.
Answer:A
Answer: A
Question: When sold at a 50% discount, a sweater nets the merchant a 40% profit on the wholesale cost at which he initially purchased the item. By what % is the sweater marked up from wholesale at its normal retail price?
Options:
A)20%
B)64.29%
C)70%
D)80%
E)100%
Rationale: we should be careful about what are we measuring % on/what is the base..
let the Marked up price =100..
Selling price= 100-50%of 100=50..
profit= 40%..
therefore the wholesale purchase cost= x.... 1.4x=50
or x=35.71...
marked price was 100 so ...
so answer is 64.29%..
B
Answer: B
Question: If x is divisible by 2, 14, and 70, which of the following must be the least multiple of x?
Options:
A)70
B)140
C)210
D)350
E)700
Rationale: We are looking for the LCM (which is not 0) of 2, 70 = 2*7*5, 14 = 2*7:
2 * 5 * 7 = 70
The answer is A.
Answer: A
Question: The maximum number of student amoung them 1204 pens and 840 pencils can be distributed in such a way that each student gets the same number of pens and same number of pencils is :
Options:
A)91
B)28
C)56
D)89
E)None of these
Rationale: Solution
Required number of student = H.C.F of 1204 and 840 = 28. Answer B
Answer: B
Question: The price of a stock has decreased by 75% since the year 2000. How many percent should the stock price increase in order to gain the same value as in the year 2000?
Options:
A)300%
B)30%
C)75%
D)150%
E)25%
Rationale: Let P be the price of the stock in the year 2000.
Now the stock price is 0.25P
The price needs to increase 0.75P
0.75P/0.25P = 300%
The answer is A.
Answer: A
Question: If Re.1 amounts to Rs.9 over a period of 20 years. What is the rate of simple interest?
Options:
A)90%
B)30%
C)80%
D)40%
E)42%
Rationale: 8 = (1*20*R)/100
R = 40%
Answer:D
Answer: D
Question: An archer is shooting arrows from various distances. She shoots at a target from 30 yards, 40 yards, and 50 yards. The probability that she hits within the bullseye from 30 yards is 5/6, the probability that she hits within the bullseye from 40 yards is 4/5, and the probability that she hits within the bullseye from 50 yards is 3/4. What is the probability that she hits the bullseye at least once in three shots, one from each distance listed.
Options:
A)104/105
B)119/120
C)139/140
D)9/10
E)14/15
Rationale: The probability that she hits the bullseye at least once = 1 - (the probability that she misses the bullseye every shot)
The probability that she misses all shots = (prob that she misses from 30 yards)*(prob that she misses from 40 yards)*(prob that she misses from 50 yards)
Prob that she misses from 30 yards = 1 - 5/6 = 1/6; Prob that she misses from 40 yards = 1 - 4/5 = 1/5; Prob that she misses from 50 yards = 1 - 3/4 = 1/4
Thus the probability that she misses all shots = (1/6)*(1/5)*(1/4) = 1/120
Thus the probability that she makes at least one shot = 1 - (1/120) = 119/120
B
Answer: B
Question: 12 times a number gives 156. The number is
Options:
A)11
B)12
C)13
D)None
E)Cannot be determined
Rationale: Explanation:
Let the number be 'N'
12×N=156⇒N=13
Correct Option: C
Answer: C
Question: A watch which gains uniformly ,is 5 min,slow at 8 o'clock in the morning on sunday and it is 5 min 48 sec.fast at 8 p.m on following sunday. when was it correct?
Options:
A)wednesday at 7:20 PM
B)wednesday at 7:21 PM
C)wednesday at 7:22 PM
D)wednesday at 7:23 PM
E)wednesday at 7:24 PM
Rationale: This sunday morning at 8:00 AM, the watch is 5 min. Slow, and the next sunday at 8:00PM it becomes 5 min 48 sec fast. The watch gains min in a time of (7×24)+12 = 180 hours.
To show the correct time, it has to gain 5 min.
54/5 min-> 180 hours
5 min -> ?
5/54/5x 180
83 1/3 hrs = 72 hrs+11 1/3 hrs =3 days+11 hrs + 20 min
So the correct time will be shown on wednesday at 7:20 PM
Answer A
Answer: A
Question: A man on tour travels first 160 km at 64 km/he and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is?
Options:
A)71.11 km/hr
B)66.11 km/hr
C)78.11 km/hr
D)81.11 km/hr
E)54.11 km/hr
Rationale: A
71.11 km/hr
Total time taken = (160/64 + 160/8) = 9/2 hrs.
Average speed = 320 * 2/9 = 71.11 km/hr.
Answer: A
Question: one person Tharak speed with the current is 10 km/hr and the speed of the current is 2 km/hr. Tharak's speed against the current is:
Options:
A)6 km/hr
B)1 km/hr
C)2 km/hr
D)3 km/hr
E)4 km/hr
Rationale: Man's speed with the current = 10 km/hr
=> speed of the man + speed of the current = 10 km/hr
speed of the current is 2 km/hr
Hence, speed of the man = 10-2 = 8 km/hr
man's speed against the current = speed of the man - speed of the current
= 8-2 = 6 km/hr
ANSWER:A
Answer: A
Question: A tap can fil up an empty tank in 5 hours wheras it can be emptied by a pipe in 6 hours. How long will it take to fill the empty tank if both the taps and pipe are opened together?
Options:
A)40 hrs.
B)30 hrs.
C)50 hrs.
D)60 hrs.
E)20 hrs.
Rationale: Explanation:
In this type of questions we first get the filling in 1 minute for both pipes then we will add them to get the result, as
Part filled by rap in 1 hr= 1/5
Part emptied by pipe in 1 hr= 1/6
work done by (tap+pipe) in 1 hr= 1/5 - 1/6
= 1/30
So both tap and pipe opened the tank will fill in 30 hrs.
Option B
Answer: B
Question: Six bells commence tolling together and toll at intervals of 4, 6, 8, 10, 12 and 14 seconds respectively. In 70 minutes, how many times do they toll together ?
Options:
A)2
B)3
C)4
D)5
E)6
Rationale: LCM of 4, 6, 8 10, 12 and 14 is 840.
So, after each 840 seconds, they would toll together.
Hence, in 70 minutes, they would toll 70*60 seconds / 840 seconds = 5 times
But then the question says they commence tolling together. So, they basically also toll at thebeginning(0second).
So, total tolls together = 5+1 = 6
Answer: E
Answer: E
Question: The avg weight of A,B & C is 84 kg. If D joins the group, the avg weight of the group becomes 80 kg.If another man E who weights is 5 kg more than D Replaces A, Then the avgof B,C,D&E becomes 79 kg. What is the weight of A?
Options:
A)77
B)35
C)75
D)80
E)90
Rationale: A + B + C = 3 *84 = 252
A + B + C + D = 4 * 80 = 320 ---- (i)
So, D = 68& E = 68 + 5 = 73
B + C + D +E = 79 * 4 = 316 --- (ii)
From Eq. (i) & (ii)
A-E = 320 â€“ 316 = 4
A = E +4 = 73 + 4 = 77
A
Answer: A
Question: Thomas worked in the factory @ 4550/- per week.
Owner told him to give the amount after one month. Then how much amount will be paid to Thomas ?
Options:
A)9500
B)17500
C)18200
D)19500
E)6750
Rationale: Total salary paid to Thomas in one week : 4550/-
Salary for one day : 4550 /7= 650/-
Total for one month = 650/- * 30days = 19500/-
Answer is Option (D)
Answer: D
Question: The apartment on King-Williams street is an asset that its value is tramping about. From the year 1973 to 1983 it's value decreased by 16% and from 1983 to 1993 it's value increased by 16%. What is the value of the asset in 1993 if in 1973 it was worth $35,000?
Options:
A)$38,796.
B)$40,000.
C)$38,976.
D)$39,679.
E)$34,104.
Rationale: 35,000 *1.16*.84= 34,104
Answer E
Answer: E
Question: In a jar there are balls in different colors: blue, red, green and yellow.
The probability of drawing a blue ball is 1/4.
The probability of drawing a red ball is 1/5.
The probability of drawing a green ball is 1/10.
If a jar cannot contain more than 50 balls, how many yellow balls are in the Jar?
Options:
A)9
B)11
C)10
D)12
E)17
Rationale: answer of 1st
just add the given probabilities p(blue)+p(red)+p(green) i.e
1/4+1/5+1/10=11/20
now we know p(blue)+p(red)+p(green)+p(yellow)=1
11/20+p(yellow)=1
p(yellow)=9/20
i.e why yellow balls are 9.
A
Answer: A
Question: What is the total cost of 2 sandwiches at $1.49 each and 4 sodas at $0.87 each?
Options:
A)$3.36
B)$6.46
C)$8.46
D)$10.08
E)$11.85
Rationale: Answer = B
2 * 1.49 + 4 * 0.87
= 2 (1.50 - 0.01) + 4 (1.00 - 0.13)
= 3 + 4 - 0.02 - 0.52
= 7 - 0.54
= 6.46
Answer: B
Question: A father said to his son, "I was as old as you are at present at the time of your birth." If the father's age is 38 years now, the son's age five years back was:
Options:
A)19 years
B)14 years
C)33 years
D)38 years
E)39 years
Rationale: Let the son's present age be x years.
Then, (38 - x) = x
2x = 38 => x = 19
Son's age 5 years back = (19 - 5) = 14 years.
ANSWER:B
Answer: B
Question: A hiker walked for 3 days. She walked 18 miles on the first day, walking 3 miles per hour. On the second day she walked for one less hour but she walked one mile per hour, faster than on the first day. On the third day she walked the same number of hours as on the first day, but at the same speed as on the second day. How many miles in total did she walk?
Options:
A)24
B)44
C)58
D)60
E)62
Rationale: First day - 18 miles with 3 miles per hours then total - 6 hours for that day
Second day - 4 miles per hour and 5 hours - 20 miles
Third day - 4 miles per hour and 6 hours - 24 miles
Total 18+20+24 - 62
Answer: option E.
Answer: E
Question: If a, b, and c are consecutive integers such that a > b > c and the sum of a, b, and c is a multiple of 10, which of the following could be the value of a?
Options:
A)0
B)1
C)9
D)10
E)12
Rationale: We're given a very specific set of restrictions in this prompt:
1) A, B and C are CONSECUTIVE INTEGERS
2) A > B > C
3) A+B+C = a multiple of 10
We're asked which of the 5 answer COULD be the value of A given these restrictions. Rather than staring at the screen or doing layered math, we canbrute forcethe answers until we find one that fits these restrictions..
Answer A: A = 0
In this case, the numbers would be 0, -1, and -2. The sum = -3 which is NOT a multiple of 10. Eliminate A.
Answer B: A = 1
In this case, the numbers would be 1, 0, and -1. The sum = 0 which IS a multiple of 10. B IS the answer.
Final Answer:
B
Answer: B
Question: Find the odd man out.
331, 482, 551, 263, 383, 362, 284
Options:
A)348
B)383
C)377
D)399
E)377
Rationale: Explanation:
In each number except 383, the product of first and third digits is the middle one.
Answer: B) 383
Answer: B
Question: Which one of the following is the least number of four digits divisible by 71?
Options:
A)1006
B)1065
C)1094
D)1056
E)1057
Rationale: 1000/71 = 14 6/71
1000 + 71 – 6 = 1065
ANSWER:B
Answer: B
Question: Salad dressing A is made up of 30% vinegar and 70% oil, and salad dressing B contains 10% vinegar and 90% oil. If the 2 dressing are combined to produce a salad dressing that is 15% vinegar, dressing A comprises what % of the new dressing?
Options:
A)15%
B)20%
C)25%
D)40%
E)55%
Rationale: The total combination must be 100%. Let X% of dressing 1 is used.
30 * x + 10 * (100-x) = 15*100
solving, x= 25%
C is the answer.
Answer: C
Question: A and B started a business with their capitals Rs. 12,000 and 36,000 respectively. Annual profit will be distributed between them in the ratio
Options:
A)2:3
B)1:3
C)1:4
D)2:5
E)1:5
Rationale: 12,000:36,000
Ans. 1:3
ANSWER:B
Answer: B
Question: How many positive integers less than 60 have a reminder 01 when divided by 4?
Options:
A)13
B)14
C)15
D)16
E)17
Rationale: 1 also gives the remainder of 1 when divided by 4. So, there are total of 15 numbers.
Answer: C.
Answer: C
Question: On a test, students receive 6 points for each correct answer and are penalized by losing 3 points for each incorrect answer. There are 6 questions on the test and each question has 4 answer options, A, B, C, and D. It is known that 5 of the questions have option B as the correct answer and one question has option C as the correct answer. If a student marks B for the first 3 questions and C for the last 3 questions, what is the minimum possible score that student can receive?
Options:
A)-2
B)-1
C)0
D)1
E)2
Rationale: For the minimum possible score, let us take the worst case scenario
Suppose, he gets all of the last 3 qs wrong whose correct answer options are B and one of the first 3 qs wrong whose correct option is C
In that case, he will get only 2 out of the first 3 qs right.
Therefore, minimum possible score=(6*2)-(4*3)=0
Answer C
Answer: C
Question: A metallic sheet is of rectangular shape with dimensions 48 m x 34 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:
Options:
A)4830
B)5120
C)4608
D)7500
E)8960
Rationale: l = (48 - 16)m = 32 m,
b = (34 -16)m = 18 m,
h = 8 m.
Volume of the box = (32 x 18 x 8) m3 = 4608 m3.
Answer: Option C
Answer: C
Question: How many of the positive factors of 14 are not factors of 21?
Options:
A)4
B)3
C)1
D)2
E)0
Rationale: Factors of 14 - 1, 2, 7, 14,
factors of 21- 1, 3, 7, 21,
Comparing both, we have three factors of 14 which are not factors of 21- 2,14
The answer is C
Answer: C
Question: Find 96 ×× 98
Options:
A)93/198
B)93/12
C)93/13
D)93/10
E)93/8
Rationale: Here both numbers are less than 100. So they are deficient of - 4 and - 1 compared with 100. So
Answer:	E
Answer: E
Question: In one year, the population, of a village increased by 25% and in the next year, it decreased by 25%. If at the end of 2nd year, the population was 18750, what was it in the beginning?
Options:
A)7787
B)8000
C)1988
D)1277
E)20000
Rationale: x*125/100 * 75/100 = 18750
X*0.9375=18750
X=18750/0.9375
=> 20000
Answer:E
Answer: E
Question: A manufacturer of a certain product can expect that between 0.3 percent and 0.5 percent of the units manufactured will be defective. If the retail price is $2,500 per unit and the manufacturer offers a full refund for defective units, how much money can the manufacturer expect to need to cover the refunds on 20,000 units?
Options:
A)Between $15,000 and $25,000
B)Between $30,000 and $50,000
C)Between $60,000 and $100,000
D)Between $150,000 and $250,000
E)Between $300,000 and $500,000
Rationale: Number of defective units is between = .3 % of 20000 and .5% of 20000
= 60 and 100
Retail Price per unit = 2500 $
Expected price of refund is between = 2500 x 60 and 2500 x 100
=1,50,000 and 2,50,000 dollars
Answer D
Answer: D
Question: In Mike's opinion, his weight is greater than 65kg but leas than 72 kg. His brother does not agree with Mike and he thinks that Mike's weight is greater than 60kg but less than 70kg. His mother's view is that his weight cannot be greater than 68 kg. If all of them are correct in their estimation, what is the average of different probable weights of Mike?
Options:
A)60 kg
B)61.5 kg
C)62 kg
D)66.5 kg
E)68.5 kg
Rationale: Let Mike's weight be X kg.
According to Mike, 65 < X < 72.
According to Mike's brother, 60 < X < 70.
According to Mike's mother, X < 68.
The values satisfying all the above conditions are 66 and 67.
Required average = (66 + 67) / 2 = 66.5 kg
D
Answer: D
Question: The number of timeshare condos available at Sunset Beach is 2/5 the number of timeshare condos available at Playa del Mar. If the total number of timeshare condos available at the two beaches combined is 280, what is the difference between the number of condos available at Sunset Beach and the number of condos available at Playa del Mar?
Options:
A)60
B)90
C)120
D)150
E)240
Rationale: Let x be the number of timeshare condos available at Playa del Mar.
Then number of timeshare condos available at Sunset Beach = 3/5x
We know, x + 2/5 x = 280
Hence, x = 200. So, number of timeshare condos available at Playa del Mar = 200
the difference between the number of condos available at Sunset Beach and the number of condos available at Playa del Mar = x - 2/5x = 2/5x = 3/5(200) = 120
The correct answer is C
Answer: C
Question: A boat can travel with a speed of 15 km/hr in still water. If the speed of the stream is 6 km/hr, find the time taken by the boat to go 86 km downstream.
Options:
A)4.1 hr
B)5.25 hr
C)8.25 hr
D)2.25 hr
E)2.50 hr
Rationale: speed of boat in still water = 15 km/hr
speed of the stream = 6 km/hr
Speed downstream = (15+6) = 21 km/hr
Time taken to travel 86 km downstream = 86â„16 = 17â„4 = 4.1 hours
Answer is A
Answer: A
Question: Find out the C.I on Rs.5000 at 4% p.a. compound half-yearly for 1 1/2 years.
Options:
A)Rs.420.20
B)Rs.319.06
C)Rs.306.04
D)Rs.294.75
E)None of these
Rationale: Explanation:
A = 5000(51/50)3
= 5306.04
5000
-----------
306.04
Answer IS C
Answer: C
Question: If we have 10 people in a meeting, in how many ways they can sit around a table?
Options:
A)10*9!
B)9*8!
C)8*7!
D)7*6!
E)6*5!
Rationale: If there arenpeople sitting around a table, there are(n-1)!possible arrangements:
Here, n=10
(n-1)!=9!=9*8!
Ans:B
Answer: B
Question: If the average (arithmetic mean) of five consecutive negative integers is 2k – 1, what is the difference W between the greatest and least of the five integers?
Options:
A)4K
B)4k^2 -4k
C)4-4k
D)4
E)4k+4
Rationale: (n-2 + n - 1 + n + n + 1 + n + 2)/5 = 2k - 1
=> n = 10k - 5
Greatest = n + 2 = 10k - 5 + 2 = 10k - 3
Least = n - 2 = 10k - 5 - 2
=> Difference W= 10k - 3 - (10k - 7)
= 4
Answer - D
Answer: D
Question: Find the least number must be subtracted from 427398 so that remaining no.is divisible by 15?
Options:
A)1
B)3
C)5
D)6
E)7
Rationale: On dividing 427398 by 15 we get the remainder 3, so 3 should be subtracted
A
Answer: A