mathewhe/aqua_rat huggingface dataset:
Question: On a store counter are exactly two boxes containing only purple marbles and yellow marbles. Box A has 30 purple marbles and 20 yellow marbles; box B has 15 purple marbles and 35 yellow marbles. If Melanie randomly selects one of the boxes and then randomly selects one marble from the box, what is the probability that the marble selected will be purple?
(A) 3/20
(B) 3/10
(C) 9/20
(D) 3/5
(E) 9/10
Rationale: The question asks us to select a purple marble from either of the boxes. Here we need to select a box first(either A or B) and then select the marble from the box. So these events are AND events i.e. both need to be done to select a purple marble from the box. For an AND event we multiply the probability of the events. Hence the probability equation can be written as:
P(Selecting a purple marble) = P(selecting a box) * P(selecting purple marble from the selected box)
The probability of selecting either of the box is the same = 1/2
=1/2∗30/50+1/2∗15/50=9/20.
Answer:C
Answer: (C) 9/20
Question: By selling a house for Rs.45000, it was found that 1/8 of the outlay was gained, what ought the selling to price to have been in order to have lost 5 p.c?
(A) 91887
(B) 38000
(C) 38002
(D) 38027
(E) 38028
Rationale: CP + CP/8 = 45000
CP = 40000
SP = 40000*(95/100)
=38000
Answer: B
Answer: (B) 38000
Question: If the function f(x) is defined for all real numbers x as the maximum value of 2x + 4 and 16 + 6x, then for which one of the following values of x will f(x) actually equal 2x + 4 ?
(A) –4
(B) –5
(C) –6
(D) –7
(E) –9
Rationale: Since f(x) defines maximum of 2x + 4 and 16 + 6x,
to find those x when 2x+4 has greater value,
2x + 4 > 16 + 6x
or x < -3
Only value that satisfy this is -4.
Answer is (A),
Answer: (A) –4
Question: Which greatest possible length can be used to measure exactly 15 meter 75 cm, 11 meter 25 cm and 7 meter 65 cm
(A) 45cm
(B) 255cm
(C) 244cm
(D) 55cm
(E) 50cm
Rationale: Explanation:
Convert first all terms into cm.
i.e. 1575 cm, 1125cm, 765cm.
Now whenever we need to calculate this type of question, we need to find the HCF. HCF of above terms is 255.
Option A
Answer: (A) 45cm
Question: A grocery store bought some mangoes at a rate of 5 for a dollar. They were separated into two stacks, one of which was sold at a rate of 3 for a dollar and the other at a rate of for a dollar. What was the ratio of the number of mangoes in the two stacks if the store broke even after having sold all of its mangoes?
(A) 1:4
(B) 16:9
(C) 2:3
(D) 1:2
(E) 2:5
Rationale: The cost price of a mango = 1/5 dollars.
The selling price of a mango from the first stack = 1/3 dollars --> the profit from one mango = 1/3 - 1/5 = 2/15 = 4/30 dollars.
The selling price of a mango from the second stack = 1/8 dollars --> the loss from one mango = 1/5 - 1/8 = 3/40
dollars.
The profit from one mango from the first stack is 4 times the loss from one mango from the second stack. the ratio is
4/30*40/3 =16/9
B
Answer: (B) 16:9
Question: A man buys Rs. 20 shares paying 9% dividend. The man wants to have an interest of 12% on his money. The market value of each share is:
(A) 12
(B) 10
(C) 14
(D) 25
(E) 15
Rationale: Dividend Rs 20 = (9/100*20) = 9/5
12 is an income on Rs 100
Rs 9/5 is an income Rs (100/12*9/5) = Rs 15
ANSWER E
Answer: (E) 15
Question: The average of eight results is 37 and that of the first seven is 40. The eighth result is?
(A) 25
(B) 30
(C) 12
(D) 37
(E) 16
Rationale: 8 * 37 â€“ 7 * 40 = 16
Answer: E
Answer: (E) 16
Question: A man traveled a total distance of 1200 km. He traveled one-third of the whole trip by plane and the distance traveled by train is two-thirds of the distance traveled by bus. If he traveled by train, plane and bus, how many kilometers did he travel by bus?
(A) 400
(B) 440
(C) 480
(D) 520
(E) 560
Rationale: total distance traveled = 1200 km.
distance traveled by plane = 400 km.
distance traveled by bus = x
distance traveled by train = 2x/3
x + 2x/3 + 400 = 1200
5x/3 = 800
x = 480 km
The answer is C.
Answer: (C) 480
Question: Rajeev wants to reach Mankar station exactly at 11 am. At 9.15 am, his train departs from Howrah Station. The speed of the train is 100 km per hour and distance between Howrah and Mankar is 150 kilometre. At what time will Rajeev actually reach Mankar?
(A) 10.45 am
(B) 11.00 am
(C) 11.15 am
(D) 11.30 am
(E) 11.45 am
Rationale: Speed of the train is 100 km per hour. To cover 150 km, train will take 60/100x150=90 minutes. So, the train will reach Mankar after 90 minutes from 9.15 am, that is 10.45 am.
Answer: A.
Answer: (A) 10.45 am
Question: Shaun invests a certain sum of money at 18.75% p.a. simple interest. After how many years will the sum of money become three times its principal?
(A) 10 years, 6 months, 20 days
(B) 10 years 8 months
(C) 10 years 9 months
(D) 12 years
(E) 16 years
Rationale: Solution:
B=A[1+ (tr/100)]; where A is principal amount, B final amount, t time in years and r interest rate
after putting the values 18.75= 75/4
3= [1+(75t/400)]
t= 32/3 which is (30+2)/3= 10 + 2/3 means 10 years and (12*2)/3 = 8 months.
total time 10 years 8 months
Ans: B
Answer: (B) 10 years 8 months
Question: A train running at the speed of 6 km/hr crosses a pole in 2 seconds. Find the length of the train?
(A) 150
(B) 872
(C) 3.33
(D) 3.21
(E) 30.1
Rationale: Speed = 6*(5/18) m/sec = 5/3 m/sec
Length of Train (Distance) = Speed * Time
5/3) * 2 = 3.33 meter
Answer:C
Answer: (C) 3.33
Question: Tickets to a certain concert sell for $20 each. The first 10 people to show up at the ticket booth received a 40% discount, and the next 20 received a 15% discount. If 60 people bought tickets to the concert, what was the total revenue from ticket sales?
(A) $600
(B) $740
(C) $850
(D) $980
(E) $1,240
Rationale: Price of 1 ticket = 20$
Revenue generated from sales of first 10 tickets = 10 * (60/100 * 20 )
= 10 * 12 = 120
Revenue generated from sales of next 20 tickets = 20 *(85/100 * 20 )
=20*17 = 340
Revenue generated from sales of last 30 tickets = 30 * 26
= 780
Revenue generated from sales of 60 tickets = 120 + 340 + 780
= 1240 $
Answer E
Answer: (E) $1,240
Question: If 0.6:1.4 :: 2:4:x, then x=?
(A) 56
(B) 5.6
(C) 0.56
(D) 0.056
(E) None of these
Rationale: Explanation:
0.6 × x = 2.4 × 1.4
x = (2.4 × 1.4)/0.6 = 24/10 × 17/10 × 1/(6/10)
24/10 × 14/10 × 10/6
2/5 × 14 = 28/5 = 5.6
Answer: Option B
Answer: (B) 5.6
Question: On January 1, 2010, David invests 40% of his retirement savings in Antarctic largecap stocks, 20% in Antarctic midcaps, and 40% in Antarctic smallcaps. In 2010, largecaps rise 10%, midcaps rise 20%, and smallcaps rise 5% in the Antarctic stock market; however, in 2011, largecaps fall 5% and midcaps fall 10%, while smallcaps rise x% in Antarctica. If, on January 1, 2012, David has the same total amount of retirement savings as he did two years before, then x is between
(A) 0 and 5
(B) 5 and 10
(C) 10 and 15
(D) 15 and 20
(E) 20 and 25
Rationale: Pick a smart number for the total retirement savings David starts with—say, $10,000. (If you pick $100, you’ll wind up needing to track decimals, so give yourself more zeros to start with.)
Here are the starting values:
L = $4000
M = $2000
S = $4000
Apply the first year’s changes, so that you have these numbers on 1/1/2012:
Newer L = $4000+ 10% = $4400
Newer M = $2000 + 20% = $2400
Newer S = $4000 + 5% = $4200
Now apply the second year’s changes to L and M:
Newest L = $4400– 5% = $4400– $220 = $4180
Newest M = $2400– 10% = $2400– $240 = $2160
Add these to get $6340. So the newest S must be $10,000 (the target final total of David ’s retirement savings) minus $6340, $3660
The dollar change in S from 1/1/12 to 1/1/13 is $4200 – $540 = $3660. So the question is this: what percent change does $540 represent, from a starting point of $4200? Since $4200 is a nasty divisor, switch to benchmarks:
5% of $4200 = $210.
So 10% is just double that, or $420.
15% is $630.
And so on.
From this $540 lies between $420and $630
The correct answer is C.
Answer: (C) 10 and 15
Question: Mangala completes a piece of work in 10 days, Raju completes the same work in 40 days. If both of them work together, then the number of days required to complete the work is
(A) 4 days
(B) 6 days
(C) 8 days
(D) 10 days
(E) 11 days
Rationale: If A can complete a work in x days and B can complete the same work in y days, then, both
of them together can complete the work in x y/ x+ y days.
That is, the required No. of days = 10 × 40/50 = 8 days.
C)
Answer: (C) 8 days
Question: A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is:
(A) 12 kg
(B) 60 kg
(C) 72 kg
(D) 96 kg
(E) 98 kg
Rationale: Volume of water displaced	= (3 x 2 x 0.01) m3
= 0.06 m3.
Mass of man	= Volume of water displaced x Density of water
= (0.06 x 1000) kg
= 60 kg.Answer: Option B
Answer: (B) 60 kg
Question: Find large number from below question The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and the 15 as remainder?
(A) 1340
(B) 1450
(C) 1540
(D) 1650
(E) 1635
Rationale: Let the smaller number be x. Then larger number = (x + 1365).
x + 1365 = 6x + 15
5x = 1350
x = 270
Large number = 270+1365 = 1635
E
Answer: (E) 1635
Question: Mary and Joe are to throw three dice each. The score is the sum of points on all three dice. If Mary scores 10 in her attempt what is the probability that Joe will outscore Mary in his?
(A) 24/64
(B) 32/64
(C) 36/64
(D) 40/64
(E) 42/64
Rationale: Expected value of one die is 1/6*(1+2+3+4+5+6)=3.5.
Expected value of three dice is 3*3.5=10.5.
Mary scored 10 so the probability to get the sum more then 10 (11, 12, 13, ..., 18), or more then the average, is the same as to get the sum less than average (10, 9, 8, ..., 3) = 1/2 = 32/64.
That's because the probability distribution is symmetrical for this case:
The probability of getting the sum of 3 (min possible sum) = the probability of getting the sum of 18 (max possible sum);
The probability of getting the sum of 4 = the probability of getting the sum of 17;
The probability of getting the sum of 5 = the probability of getting the sum of 16;
...
The probability of getting the sum of 10 = the probability of getting the sum of 11;
Thus the probability of getting the sum from 3 to 10 = the probability of getting the sum from 11 to 18 = 1/2.
Answer: B.
Answer: (B) 32/64
Question: January 1, 2007 was Monday. What day of the week lies on Jan. 3, 2008?
(A) Monday
(B) Thursday
(C) Wednesday
(D) Friday
(E) Sunday
Rationale: The year 2007 is an ordinary year. So, it has 1 odd day.
day of the year 2007 was Monday
day of the year 2008 will be 3 days beyond Monday
Hence, It will be Thursday. answer : B
Answer: (B) Thursday
Question: The ratio between the present ages of A and B is 3.5:3 respectively. The ratio between A's age 4 years ago and B's age 4 years hence is 1:1. What is the ratio between A's age 4 years hence and B's age 4 years ago?
(A) 14:4
(B) 13:0
(C) 15:11
(D) 13:12
(E) 13:17
Rationale: Let the present ages of A and B be 3.5x and 3x years respectively.
Then, (3.5x - 4)/(3x + 4) = 1/1
0.5x = 8 => x = 16
Required ratio = (5x + 4):(3x - 4) = 60:44 = 15:11.Answer: C
Answer: (C) 15:11
Question: A glass was filled with 10 ounces of water, and 0.02 ounce of the water evaporated each day during a 20-day period. What percent of the original amount of water evaporated during this period?
(A) 0.004%
(B) 0.02%
(C) 0.2%
(D) 4%
(E) 40%
Rationale: We are given that 0.02 ounces of water evaporated EACH DAY. Furthermore, we know that this process happened over a 20-DAY PERIOD. To calculate the total amount of water that evaporated during this time frame we need to multiply 0.02 by 20. This gives us:
0.02 x 20 = 0.4 ounces
Finally, we are asked for “What percent” of the original amount of water evaporated during this period. To determine this percentage, we have to make sure we translate the expression correctly. We can translate it to:
(Amount Evaporated/Original Amount) x 100%
(0.4/10) x 100%
(4/100) x 100% = 4%
Answer D
Answer: (D) 4%
Question: A man can row his boat with the stream at 6 km/h and against the stream in 4 km/h. The man's rate is?
(A) 1
(B) 4
(C) 7
(D) 9
(E) 6
Rationale: DS = 6
US = 4
S = ?
S = (6 - 4)/2 = 1 kmph
Answer: A
Answer: (A) 1
Question: If the terms of a series are either2or24and the sum of all the terms B of the series is 124, then which of the following could be the number of2sin the series?
(A) 26
(B) 29
(C) 35
(D) 40
(E) 48
Rationale: Ans: A
Solution: we are not certain how many 2 or 24 are there. but as given sum of all the terms B is 124 means 24*5= 120 so number of 24 can't be more than 5
so 24x +2y = 124
24*5 + 2y =124 then y=2
24*4 + 2y = 124 then y=14
24*3 +2y = 124 then y= 26
24*2 +2y =124 then y = 38
24 +2y = 124 then y= 50
26 is the ans.A
Answer: (A) 26
Question: Find the area of trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 10 cm.
(A) 287 cm2
(B) 190 cm2
(C) 180 cm2
(D) 785 cm2
(E) 295 cm2
Rationale: Explanation:
Area of a trapezium = 1/2 (sum of parallel sides) * (perpendicular distance between them) = 1/2 (20 + 18) * (10) = 190 cm2
Answer: Option B
Answer: (B) 190 cm2
Question: Sandy is younger than Molly by 16 years. If the ratio of their ages is 7:9, how old is Sandy?
(A) 42
(B) 49
(C) 56
(D) 63
(E) 70
Rationale: Let Sandy's age be 7x and let Molly's age be 9x.
9x - 7x = 16
x = 8
Sandy is 56 years old.
The answer is C.
Answer: (C) 56
Question: If a and b are integers and (2^a)(3^b) is a factor of 600^40, what is the largest possible value of ab?
(A) a
(B) 5a
(C) 20a
(D) 40a
(E) 80a
Rationale: (2^a)(3^b) is a factor of 600^40
We need to find the largest possible value of ab.
We know that 600 = 2^3*5^2*3^1
Therefore 600^40 will have one powers of 3 in it.
Hence in (2^a)(3^b), b has to 1
Therefore value of ab = a
Correct Option: A
Answer: (A) a
Question: Jim is able to sell a hand-carved statue for $620 which was a 25% profit over his cost. How much did the statue originally cost him?
(A) $496.00
(B) $512.40
(C) $555.40
(D) $574.90
(E) $588.20
Rationale: 620 = 1.25*X
X = 620/1.25 = 496.00
which rounds to $496.00, which is (A).
Answer: (A) $496.00
Question: A train has a length of 150 meters . it is passing a man who is moving at 4 km/hr in the same direction of the train, in 3 seconds. Find out the speed of the train.
(A) 182 km/hr
(B) 184 km/hr
(C) 152 km/hr
(D) 169 km/hr
(E) 179 km/hr
Rationale: Explanation:
Length of the train, l = 150m
Speed of the man , Vm= 4 km/hr
Relative speed, Vr = total distance/time = (150/3) m/s = (150/3) × (18/5) = 180 km/hr
Relative Speed = Speed of train, Vt - Speed of man (As both are moving in the same direction)
=> 180 = Vt - 4
=> Vt = 180 + 4 = 184 km/hr
Answer: Option B
Answer: (B) 184 km/hr
Question: What is the next number in the sequence : 15,21,24,30,33,39,51,57__?
(A) 69
(B) 71
(C) 67
(D) 65
(E) 79
Rationale: next no. = previous + (sum of digits)
15 + (1+5) = 21
21 + (2+1) = 24
24 + (2+4) = 30
30 + (3+0) = 33
33 + (3+3) = 39
39 + (3+9) = 51
51 +(5+1) = 57
57 + (5+7) = 69
ANSWER:A
Answer: (A) 69
Question: The true discount on a bill of Rs.270 is Rs.45.The banker's discount is
(A) 54
(B) 55
(C) 56
(D) 57
(E) None of these
Rationale: Solution
P.W	= Rs.(270 - 45)
= Rs. 225
S.I on Rs. 270	=Rs.(45/225 x 270)
= Rs. 54.
Answer A
Answer: (A) 54
Question: what is the value of (4)^-5 ?
(A) 1/602
(B) 1/120
(C) 1/650
(D) 1/1024
(E) 1/1000
Rationale: 4^-5= 1/(4)^5= 1/1024
ANSWER:D
Answer: (D) 1/1024
Question: One hundred gallons of fuel are purchased at $0.70 per gallon. The fuel is consumed at a rate of $0.50 worth of fuel per hour. At this rate, how many hours are required to consume the 100 gallons of fuel?
(A) 100
(B) 120
(C) 140
(D) 160
(E) 180
Rationale: The fuel is consumed at this rate: $0.50/$0.70 = 5/7 gallons per hour.
The time it takes to consume 100 gallons is: 100 / (5/7) = 140 hours.
The answer is C.
Answer: (C) 140
Question: If a certain toy store's revenue in November was 3/5 of its revenue in December and its revenue in January was 1/3 of its revenue in November, then the store's revenue in December was how many times the average (arithmetic mean) of its revenues in November and January?
(A) 5/2
(B) 7/2
(C) 10/3
(D) 15/4
(E) 25/3
Rationale: N = 3D/5
J = N/3 = D/5
The average of November and January is (N+J)/2 = 4D/5 / 2 = 2D/5
D is 5/2 times the average of November and January.
The answer is A.
Answer: (A) 5/2
Question: Gregory grossed $750 one week by working 60 hours. His manager pays him time-and-a-half for all hours worked in excess of 30 hours. What is Gregory's regular hourly wage?
(A) 11
(B) 12
(C) 10
(D) 20
(E) 21
Rationale: Denote by x the regular hourly wage.
Then 1.5x is the hourly overtime wage.
For 30 hours, Andrew received a salary of 30x.
For 60-30=30 hours, he received 30(1.5x)=45x
Total salary: 30x+45x=75x which equals $750.
75x=750 implies x=10 (he receives $10 per hour)
Answer C 10.
Answer: (C) 10
Question: If (18^a) * 9^(3a – 1)= (2^6)(3^b) and a and b are positive integers, what is the value of a?
(A) 22
(B) 11
(C) 9
(D) 6
(E) 3
Rationale: (18^a) * 9^(3a – 1)= (2^6)(3^b)
= 2^a . 9^a . 9^(3a – 1) = (2^6)(3^b)
Just compare powers of 2 from both sides
Answer = 6 = D
Answer: (D) 6
Question: In how many ways can 3 boys and 3 girls be seated on 8 chairs so that no two girls are together?
(A) 5760
(B) 14400
(C) 480
(D) 56
(E) 40320
Rationale: Let us take opposite of the constraint.
2 girls sitting together:	:
1 case is GGBGBBBB.
Total number of ways=3!*5!*5 with just shifting the rightmost girl.
Then the 2 leftmost girls can shift one position , and using the above reasoning, the total number of ways = 3!*5!*4 and so on till the rightmost girl has 1 position.
So total number of ways = 3!*5!(5+4+3+2+1)=120*90=10800
Similarly another case is:
GBGGBBBB.
Using the above reasoning, the total number of cases is: 3!*5!*(15) =10800
Let us take 3 girls sitting together
GGGBBBBB
There are 3! *5! Ways. The 3 leftmost girls can shift 6 positions. So there are a total of 3!*5!*6=4320 ways
So total is 2*10800 + 4320=25920
The total number of possibilities = 8! Ways =40,320
Answer is 40320-25920=480
Hence C.
Answer: (C) 480
Question: Three candidates contested an election and received 3644 votes, 7606 votes, and 13750 votes respectively. What percentage of the total votes did the winning candidate receive?
(A) 55%
(B) 56%
(C) 57%
(D) 58%
(E) 59%
Rationale: The total number of votes polled = (3644 + 7606 + 13750) = 25000
The winner's percentage = 13750/25000 * 100 = 55%
The answer is A.
Answer: (A) 55%
Question: A five digit number is to be formed using each of the digits 1, 2, 3, 4, 5 and 6 ONLY ONCE. How many numbers can be formed when 1 and 2 are not together ?
(A)  48
(B)  36
(C)  72
(D)  60
(E)  480
Rationale: Reqd ways = (Total No. of ways - cases when both 1 and 2 are together)
6 numbers can be arranged in 6 places in 6! ways. Now tie 1 and 2 together so effectively there are 5 nos. they can be arranged in 5! ways. 1 and 2 can be arranged within themselves in 2!ways.
Reqd. Answer = 6! - 5!2! = 720 - (120*2) = 480
Answer: E
Answer: (E)  480
Question: If the range R of the six numbers 4,3,14,7,10 and x is 12, what is the difference between the greatest possible value of x and least possible value of x?
(A) 	0
(B) 	2
(C) 	12
(D) 	13
(E) 	15
Rationale: The range R of a set is the difference between the largest and smallest elements of a set.
Without x, the difference between the largest and smallest elements of a set is 14-3=11<12, which means that in order 12 to be the range of the set x must be either the smallest element so that 14-x=12 ---> x=2 OR x must the largest element so that x-3=12 --> x=15.
The the difference between the greatest possible value of x and least possible value of x is 15-2=13.
Answer: D.
Answer: (D) 	13
Question: If 28a+30b+31c=545.
then a+b+c=?.a,b,c are natural numbers
(A) 12
(B) 14
(C) 8
(D) 25
(E) 18
Rationale: have a look on your calender
since,we all knw a year consist of 365 days
february is d only month which has 28 days
4 months in a year has 30 days
and,rest 7 months has 31 days..
so,following d given eq. we can write 28*1 + 30*10 + 31*7..
hence values of a,b and c are 1, 10 and 7 respectively..
a+b+c=18
ANSWER:E
Answer: (E) 18
Question: If 10 and 15 are the lengths of two sides of a triangular region, which of the following can be the length of the third side?
I. 10
II. 15
III. 25
(A) I only
(B) II only
(C) I and II only
(D) II and III only
(E) I, II, and III
Rationale: The length of any side of a triangle must be larger than the positive difference of the other two sides, but smaller than the sum of the other two sides.
Let x be the length of the third side.
15-10 < x < 15+10
5 < x < 25
The answer is C.
Answer: (C) I and II only
Question: What will be the vulgar fraction of 0.5
(A) 3/5
(B) 1/2
(C) 3/2
(D) 3/7
(E) 3/8
Rationale: Explanation:
0.5 = 50/100 = 1/2
Option B
Answer: (B) 1/2
Question: A large box contains 18 small boxes and each small box contains 25 chocolate bars. How many chocolate bars are in the large box?
(A) 220
(B) 490
(C) 380
(D) 450
(E) 690
Rationale: the only thing you have to do is a simple multiply
we have:
18*25
=450
correct answer is:
D) 450
Answer: (D) 450
Question: A hall 36m long and 15m broad is to be paved with stones, each measuring 3dm by 5 dm. The number of stones required is:
(A) 3600
(B) 1800
(C) 18
(D) 18000
(E) 1.8
Rationale: Area of the hall= 3600*1500
Area of each stone= (30*50)
Therefore, number of stones= (3600*1500/ 30*50)= 3600
ANSWER:A
Answer: (A) 3600
Question: In a factory, an average of 65 TV's are produced per day for the fist 25days of the months. A few workers fell ill for the next 5days reducing the daily avg for the month to 60 sets/day . The average production per day for day last 5days is ?
(A) 20
(B) 35
(C) 48
(D) 50
(E) 59
Rationale: Production during these 5 days = Total production in a month - production in first 25 days.
= 30 x 60 - 25 x 65
= 175
∴ Average for last 5 days = 175 / 5
= 35
Aswer : B
Answer: (B) 35
Question: If a particular player is always chosen, in how many ways can a cricket-be chosen out of 15 players?
(A) 1236
(B) 1345
(C) 1358
(D) 1321
(E) 1365
Rationale: A particular player is always chosen, it means that 10 players are selected out of the remaining 14 players.
=. Required number of ways = 14C10 = 14C4
= 14!/4!x19! = 1365
E
Answer: (E) 1365
Question: Aman started a business investing Rs. 70,000. Rakhi joined him after six months with an amount of Rs. 1,05,000 and Sagar joined them with Rs. 1.4 lakhs after another six months. The amount of profit earned should be distributed in what ratio among Aman, Rakhi and Sagar respectively, 3 years after Aman started the business?
(A) 7:6:10
(B) 12:15:16
(C) 42:45:56
(D) Cannot be determined
(E) None of these
Rationale: Aman : Rakhi : Sagar = (70000 * 36) : (105000 * 30) : (140000 * 24)
= 12:15:16
ANSWER:B
Answer: (B) 12:15:16
Question: A bookseller sells his books at a 20% markup in price. If he sells a book for $24.00, how much did he pay for it?
(A) $14.40
(B) $14.00
(C) $10.00
(D) $9.60
(E) $20.00
Rationale: Let the cost price of book = x
Selling price of book = 24$
Markup % = 20
(120/100)x = 24
=> x = 20
Answer E
Answer: (E) $20.00
Question: What is the median from the below series 90, 92, 91, 88, 95, 88, 97, 87, and 98
(A) 80
(B) 85
(C) 91
(D) 97
(E) 100
Rationale: Ordering the data from least to greatest, we get:
87, 88, 88, 90, 91, 93, 95, 96, 98
The median quiz score was 91. (Four quiz scores were higher than 91 and four were lower.)
C
Answer: (C) 91
Question: 10% of the inhabitants of village having died of cholera.,a panic set in , during which 25% of the remaining inhabitants left the village. The population is then reduced to 4050. Find the number of original inhabitants.
(A) 6000
(B) 5000
(C) 3000
(D) 2000
(E) 1000
Rationale: Let the total number of orginal inhabitants be x.
((75/100))*(90/100)*x)=4050  (27/40)*x=4050
x=((4050*40)/27)=6000.
ANSWER A
Answer: (A) 6000
Question: 100 × 10 – 100 + 2000 ÷ 100 = ?
(A) 29
(B) 780
(C) 920
(D) 979
(E) None of these
Rationale: Solution
Given exp. = 100 × 10 - 100 + 20 = 1000 - 100 + 20 = 1020 - 100 = 920.
Answer C
Answer: (C) 920