RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: A, B and C started a business with a total investment of Rs. 72000. A invests Rs. 6000 more than B and B invests Rs. 3000 less than C. If the total profit at the end of a year is Rs. 8640, Find B's share.
A.Rs. 3240
B.Rs. 2520
C.Rs. 2880
D.Rs. 3360
Answer: B.Rs. 2520
Explanation: Explanation:
Let C's investment = Rs. x
B's investment = Rs. (x - 3000)
A's investment = Rs. (x - 3000 + 6000) = Rs. (x + 3000)
Now, (A + B + C)'s investment = Rs. 72000
=> x + (x - 3000) + (x + 3000) = 72000
=> 3x = 72000
=> x = 24000
Hence, A's investment = Rs. 27000
B's investment = Rs. 21000
C's investment = Rs. 24000
Ratio of the capitals of A, B and C
= 27000 : 21000 : 24000
= 9 : 7 : 8
A's share = Rs. [(7/24) Ã— 8640] = Rs. 2520
Answer: Option B
Question: 2 minute is taken to travel the diagonal of square field at 3km/hour.calculate the area of field?
A.25 are
B.30 are
C.50 are
D.60 are
Answer: C.50 are
Explanation: speed of man=[3*5/18] m/sec.=5/6 m/sec., distance travel in 2 minute={5/6*2*60} m.=100 m.
diagonal of square field=100 m
area of field=1/2*diagonal^2=[1/2*100*100] sq.m=5000 sq.m=5000/100=50 are(1 are=100 sq. m)
answer C
Question: An elephant fell into a wall of depth 20mts.Everyday it climbs 4mts but at the end falls by 2mts.Find the number of days it would take for the elephant to get out of the wall
A.7 days
B.9 days
C.8 days
D.10 days
Answer: B.9 days
Explanation: 4-2=2
2*8=16
16(8 days)+4(9th day)=20
8+1 =9 days
ANSWER:B
Question: Two different natural numbers are such that their product is less than their sum. One of the numbers must be
A.1
B.2
C.3
D.4
Answer: A.1
Explanation: Solution
Since 1. x<1+x, so one of the numbers is 1.
Answer A
Question: 1394 x 1394
A.1943236
B.1981709
C.18362619
D.2031719
Answer: A.1943236
Explanation: 1394 x 1394 = (1394)2
= (1400 - 2)2
= (1400)2 + (6)2 - (6 x 1400 x 6)
= 1943236.
Answer: Option A
Question: The area of a circular field is 13.86 hectares. Find the cost of fencing it at the rate of Rs. 4.40 per metre.
A.2399
B.3888
C.2999
D.5808
Answer: D.5808
Explanation: Explanation:
Area = (13.86 x 10000) sq.m = 138600 sq.m
Circumference =
Cost of fencing = Rs. (1320 x 4.40) = Rs. 5808.
Answer: D) 5808
Question: The traffic lights at 3 different roads change after every 32 sec, 72 sec, 108 sec respectively. If they all change simultaneously at 9:15 AM then at what time will they again change simultaneously.
A.9:29:24
B.9:42:15
C.10:15:24
D.9:54:12
Answer: A.9:29:24
Explanation: LCM of 32,72,108 = 864 =14mnts 24sec
The lines will change every 14m 24sec
The light will change again after 9:15 AM is = 9:15+0:14:24 = 9:29:24
Answer is A
Question: A peanut farmer sells his peanuts through a distributor, which take a commission of 17% of the price set by the farmer. The distributor obtains the product from a farmer at the price of $15 per peanut pound. What is the price that the buyer observers if the distributor wants to maintain a 17% profit on the cost of each pound of peanuts sold?
A.21.15
B.21.2
C.21.25
D.21.3
Answer: A.21.15
Explanation: Farmer price = $15;The distributor wants to maintain a 17% profit on the cost of each peanut pound, thus he must get $15*1.17 = $17.55 after the distributor takes a commission of 17% of the final price --> (final price)*0.83 = $17.55 --> (final price) = $21.15Answer: A.
Question: 1, 8, 27, 64, 125, 216, (....)
A.354
B.392
C.343
D.245
Answer: C.343
Explanation: Explanation :
The pattern is 13, 23, 33, 43, 53, 63, etc
Hence, next number is 73 = 343
Answer : Option C
Question: On January 1, 2011, John invests 60% of his retirement savings in Antarctic largecap stocks, 20% in Antarctic midcaps, and 20% in Antarctic smallcaps. In 2011, largecaps rise 10%, midcaps rise 20%, and smallcaps rise 10% in the Antarctic stock market; however, in 2012, largecaps fall 10% and midcaps fall 10%, while smallcaps rise x% in Antarctica. If, on January 1, 2013, John has the same total amount of retirement savings as he did two years before, then x is between
A.10 and 20
B.20 and 30
C.30 and 40
D.40 and 50
Answer: A.10 and 20
Explanation: Pick a smart number for the total retirement savings John starts with—say, $1,000. (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 = $600
M = $200
S = $200
Apply the first year’s changes, so that you have these numbers on 1/1/2012:
Newer L = $600 + 10% = $660
Newer M = $200 + 20% = $240
Newer S = $200 + 10% = $220
Now apply the second year’s changes to L and M:
Newest L = $660 – 10% = $660 – $66 = $594
Newest M = $240 – 10% = $240 – $24 = $216
Add these to get $810. So the newest S must be $1,000 (the target final total of John’s retirement savings) minus $810, $190
The dollar change in S from 1/1/12 to 1/1/13 is $220 – $30 = $190. So the question is this: what percent change does $190 represent, from a starting point of $220? Since $220 is a nasty divisor, switch to benchmarks:
10% of $220 = $22.
So 20% is just double that, or $44.
And so on.
From this $30 lies between $22 and $44
The correct answer is A.
Question: If k is an integer and 0.00010101 x 10^k is greater than 100, what is the least possible value of k?
A.3
B.4
C.5
D.6
Answer: D.6
Explanation: 0.00010101 * 10^k > 100
We need to move the decimal point to the right 6 places to get 101.01
This is equivalent to multiplying by 10^6.
The answer is D.
Question: When positive integer x is divided by positive integer y, the remainder is 6. If x/y = 96.15, what is the value of y?
A.96
B.75
C.40
D.25
Answer: C.40
Explanation: by the definition of a remainder, the remainder here is equal to 6/y. the remainder in decimal form is given as .15
therefore, 6/y = .15
solve for y and get 40.
C
Question: Fifty percent of the subscribers to newspaper X are corporate managers and, of these, 30 percent are in the financial field. If 40 percent of the subscribers who are corporate managers in the financial field are money managers, how many of the newspaper's 25000 subscribers are corporate money managers in the financial field?
A.1,500
B.3,000
C.3,750
D.7,500
Answer: A.1,500
Explanation: Total Subscribers : 25k. Out of these, # of Corporate Managers = 12.5k. Out of these , 30 % are in financial field = 3.75k.
Thus, we have 3.75k Corporate managers, who are in financial field, and 40% of these are money managers = 1.5k
ANSWER:A
Question: The residents of the town A participated in a survey to determine the number of hours per week each resident spent watching television. The distribution of the results of the survey had a mean of 21 hours and a standard deviation of 6 hours. The number of hours that Pat, a resident of town A, watched television last week was between 1 and 2 standard deviations below the mean. Which of the following could be the number of hours that Pat watched television last week?
A.- 30
B.- 20
C.- 6
D.- 12
Answer: C.- 6
Explanation: (21-6*2)<number of hours that Pat watched television last week <(21-6*1)
=9<W<15
12=C.
Question: A new home buyer pays 4% annual interest on her first mortgage and 9% annual interest on her second mortgage. If she borrowed a total of $310,000, 80% of which was in the first mortgage, what is her approximate monthly interest payment?
A.$1,292
B.$1,733
C.$3,466
D.$12,917
Answer: A.$1,292
Explanation: 0.04x + 0.09y = 310000 [1]
0.04x = 0.80 * 310000 = 248000 [2]
248000 + 0.09y = 310000 --> 0.09y = 62000 [3]
248000 / 12 = 258333.3333 [4]
62000 / 12 = 5166.67 [5]
Adding [4,5] we get: 25833 [6]
Dividing [6] / 2 to get an average we get 1.292,ANS A
Question: a square of 2 unit is given and four circles are made on its corners having equal radius of each. and another circle of equAl radius is made on the center of the square. find out the area of square which is not covered by circles?
A.0.76
B.0.86
C.0.96
D.1.16
Answer: B.0.86
Explanation: let the radius of circle is 'r'
area of the circle which is at corner = (22/7*r^2)/4
hence the area of all four circles are = 22/7*r^2
areaof circle which is made on center of suare is = 22/7*r^2
total area of all circles are = 2*22/7*r^2...........................(1)
if we construct the diagram we get the relation
4r = 2sqrt2
r = 1/sqrt2
put the value of r in eqn 1 and we get
2*22/7*1/2 = 22/7 = 3.14
area of suare = 2^2 = 4
area of remaining part = 4-3.14 = 0.86
ANSWER:B
Question: If s and t are positive integers such that s/t = 64.16, which of the following could be the remainder when s is divided by t?
A.15
B.18
C.24
D.30
Answer: C.24
Explanation: 0.16 = 4/25
The remainder must be divisible by 4.
The answer is C.
Question: The arithmetic mean of 2 numbers is 34 and their geometric mean is 16. One of the numbers will be
A.1
B.2
C.3
D.4
Answer: D.4
Explanation: A.M=x+y2=34
x+y=68
G.M=(x.y)^1/2=16
x.y=256
x^2-68x+256=0
x=4 or 64
ANSWER:D
Question: What is the sum of mean and median of 17, 45, 59, 113, 76, 95, 59, 35, 12,36 ?
A.50.2
B.45.8
C.54.7
D.61.8
Answer: C.54.7
Explanation: mean = (17+ 45+ 59+ 113+ 76+ 95+ 59+ 35+ 12 + 36)/10 = 547/10 = 54.7
Answer is C
Question: A company plans to award prizes to its top 3 salespeople, with the largest prize going to the top salesperson, the next-largest prize to the next salesperson, and a smaller prize to the third-ranking salesperson. If the company has 8 salespeople on staff, how many different arrangements of winners are possible?
A.1,728
B.1,440
C.336
D.220
Answer: C.336
Explanation: [quote=Bunuel]A company plans to award prizes to its top 3 salespeople, with the largest prize going to the top salesperson, the next-largest prize to the next salesperson, and a smaller prize to the third-ranking salesperson. If the company has 8 salespeople on staff, how many different arrangements of winners are possible?
8*7*6
=336
Answer : C
Question: A boat goes 100 km downstream in 10 hours, and 75 m upstream in 15 hours. The speed of the stream is?
A.2 (1/2) km/h
B.4 km/h
C.6 km/h
D.3 km/h
Answer: D.3 km/h
Explanation: Explanation:
100 --- 10 DS = 10
? ---- 1
75 ---- 15 US = 5
? ----- 1 S = (10 - 5)/2
= 2 2 ½ kmph
Answer: Option D
Question: Two vessels contains equal number of mixtures milk and water in the ratio 5:3 and 6:2. Both the mixtures are now mixed thoroughly. Find the ratio of milk to water in the new mixture so obtained?
A.11:5
B.9:13
C.5:11
D.11:3
Answer: A.11:5
Explanation: The ratio of milk and water in the new vessel is = (5/8 + 6/8) : (3/8 + 2/8)
= 11/8 : 5/8 = 11:5
Answer is A
Question: Rita can knit a pair of socks in 3 days. Sita can knit the same in 6 days. If they are knitting together, in how many days will they knit two pairs of socks.
A.4
B.1
C.2
D.5
Answer: C.2
Explanation: 1 /3+ 1/6 = 1 /2 Together they will take, 1/ 1/2 = 2
Answer: C.
Question: Three 6 faced dice are thrown together. The probability that all the three show the same number on them is ?
A.1/37
B.1/36
C.1/39
D.1/34
Answer: B.1/36
Explanation: It all 3 numbers have to be same basically we want triplets. 111, 222, 333, 444, 555 and 666. Those are six in number. Further the three dice can fall in 6 * 6 * 6
= 216 ways.
Hence the probability is 6/216
=1/36
Answer: B
Question: How much more would Rs.20000 fetch, after two years, if it is put at 20% p.a. compound interest payable half yearly than if is put at 20% p.a. compound interest payable yearly?
A.482
B.725
C.992
D.837
Answer: A.482
Explanation: 20000(11/10)4 - 20000(6/5)2 = 482
Answer:A
Question: Find the simple interest on Rs.500 for 9 months at 6 paisa per month?
A.188
B.270
C.288
D.266
Answer: B.270
Explanation: I = (500*9*6)/100 = 270.Answer: B
Question: If (m-8) is a factor of m^2-hm-24, then h=
A.3
B.5
C.6
D.11
Answer: B.5
Explanation: (m-8)(m-a)=m^2-hm-24
A=-3
h=8+a=5=B
Question: A man can row downstream at the rate of 32 Kmph and upstream at 8 Kmph. Find the man’s rate in still water and rate of current?
A.20 Kmph, 10 Kmph
B.12 Kmph, 22 Kmph
C.22 Kmph, 12 Kmph
D.20 Kmph, 12 Kmph
Answer: D.20 Kmph, 12 Kmph
Explanation: Explanation:
Rate of still water = 1/2 (down stream + upstream)
= 1/2 (32 + 8) = 20 Kmph
Rate of current = 1/2 (down stream - upstream)
= 1/2 (32 - 8)
= 1/2 (24)
= 12 kmph
Answer: Option D
Question: Find the odd man out. 1, 5, 11, 17, 23, 29
A.29
B.11
C.17
D.1
Answer: D.1
Explanation: Explanation :
All given numbers except 1 are prime numbers.
One is not a prime number because it does not have two factors. It is divisible by only 1
Answer : Option D
Question: Excluding stoppages, the speed of a bus is 54 km/hr and including stoppages, it is 45 km/hr. For how many minutes does the bus stop per hour?
A.118 min
B.10 min
C.18 min
D.16 min
Answer: B.10 min
Explanation: Due to stoppages, it covers 9 km less.
Time taken to cover 9 km = 9/54 * 60
= 10 min.
Answer:B
Question: Bradley owns b video game cartridges. If Bradley’s total is one-sixth the total owned by Andrew and four times the total owned by Charlie, how many video game cartridges do the three of them own altogether, in terms of b?
A.23b / 4
B.25b / 4
C.27b / 4
D.29b / 4
Answer: D.29b / 4
Explanation: b = Bradley’s total
6b = Andrew’s total
b/4 = Charlie’s total
The total number of cartridges is:
b + 6b+ b/4 = (4b + 24b + b) / 4 = 29b / 4
The answer is D.
Question: Find large number from below question The difference of two numbers is 750. On dividing the larger number by the smaller, we get 6 as quotient and the 15 as remainder
A.1345
B.1250
C.897
D.900
Answer: C.897
Explanation: Let the smaller number be x. Then larger number = (x + 1365).
x + 750 = 6x + 15
5x = 735
x = 147
Large number = 147+1365 = 897
C
Question: The C.P of 15 books is equal to the S.P of 18 books. Find his gain% or loss%?
A.16 2/3%
B.16 2/7%
C.16 7/3%
D.18 2/3%
Answer: A.16 2/3%
Explanation: 15 CP = 18 SP
18 --- 3 CP loss
100 --- ? => 16 2/3% loss
Answer: A
Question: A candidate got 35% of the votes polled and he lost to his rival by 2340 votes. How many votes were cast?
A.7500
B.3388
C.2665
D.7800
Answer: D.7800
Explanation: 35%-----------L
65%-----------W
------------------
30%----------2340
100%---------? => 7800
Answer: D
Question: The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is
A.33
B.35
C.28
D.220
Answer: B.35
Explanation: Explanation:
Excluded number = (27 x 5) - (25 x 4) = 135 - 100 = 35.
Answer: B
Question: If a/b = 1/3, b/c = 2, c/d = 1/2, d/e = 3 and e/f = 1, then what is the value of abc/def ?
A. 27/4
B. 27/8
C. 3/4
D. 3/2
Answer: D. 3/2
Explanation: Say a = 2. Then:
a/b = 1/3 --> b = 6;
b/c = 2 --> c = 3;
c/d = 1/2 --> d = 6;
d/e = 3 --> e = 2;
e/f = 1 --> f = 2.
abc/def = (2*6*3)/(6*2*2) = 3/2.
Answer: D.
Question: A and B start a business jointly. A invests Rs.16000 for 8 months and B remains in the business for 4 months. Out of the total profit B claims 2/7th share. How much money is contributed by B?
A.12809
B.12800
C.12807
D.12802
Answer: B.12800
Explanation: 16*8: x*4 = 5:2
x = 12.8 => Rs.12800
Answer: B
Question: A train crosses a platform of 250 m in 20 sec, same train crosses another platform of length 640m in 40 sec. then find the length of the train?
A.150m
B.180m
C.152m
D.140m
Answer: D.140m
Explanation: Length of the train be ‘X’
X + 250/20= X + 640/40
2X + 500 = X + 640
X = 140m
Answer:D
Question: A train passes a station platform in 25 seconds and a man standing on the platform in 12 seconds. If the speed of the train is 72 km/hr, what is the length of the platform?
A.220
B.240
C.260
D.280
Answer: C.260
Explanation: The speed of the train is 72 * 5/18 m/s = 20 m/s
The length of the train is 20 x 12 = 240 m
platform + 240 = 20 * 25
platform = 500 - 240 = 260
The answer is C.
Question: In Gabriel's sheep herd, every sheep has either fleas or lice or both. Half of the sheep have lice, and 84 sheep have both pests. If 94 sheep have lice, how many sheep have only fleas?
A.10
B.20
C.84
D.94
Answer: A.10
Explanation: n(Lice) = n(Only lice) + n(Both lice and fleas)
n(Both lice and fleas) = 84
n(Lice) = 94
n(Only lice) = 94-84 = 10
Since, it is also said that exactly half the sheep have lice, it can be inferred that half the number of sheep is 94.
Therefore, the total number of sheep having only fleas is 10
ANS:(Option A)
Question: A boat can move upstream at 20 kmph and downstream at 35 kmph, then the speed of the current is?
A.5
B.6
C.7.5
D.8
Answer: C.7.5
Explanation: US = 20
DS = 35
M = (35 - 20)/2 = 7.5
Answer: C
Question: The manager of a produce market purchased a quantity of tomatoes for $0.80 per pound. Due to improper handling, 10 percent of the tomatoes, by weight, were ruined and discarded. At what price per pound should the manager sell the remaining tomatoes if she wishes to make a profit on the sale of the tomatoes equal to 10 percent of the cost of the tomatoes.
A.$0.94
B.$0.96
C.$0.98
D.$1.00
Answer: C.$0.98
Explanation: Assume the manager bought 100 tomatoes.
Cost Price = 80
Given: 10% are damaged --> Available tomatoes to sell = 90
90 * x - 80 = 0.1 * 80
90x - 80 = 8
90x = 88
x = 88/90 = 44/45 = 0.977
x is slightly under 0.977= 0.98
Answer: C
Question: In a division sum, the divisor is ten times the quotient and five times the remainder. If the remainder is 6, the dividend is:
A.92
B.94
C.96
D.98
Answer: C.96
Explanation: Divisor = (5 * 6) = 30
= 10 * Quotient = Divisor
=> Quotient = 30/10 = 3
Dividend = (Divisor * Quotient) + Remainder
Dividend = (30 * 3) + 6 = 96.
C
Question: Two pipes A and B can fill a cistern in 10 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?
A.19 1/7 min
B.15 1/7 min
C.17 1/7 min
D.9.2 min
Answer: D.9.2 min
Explanation: 1/10 + 1/30 - 1/40 = 13/120
120/13 = 9.2
ANSWER:D
Question: 20 people went to a hotel for combine dinner party 12 of them spent Rs. 70 each on their dinner and rest spent 4 more than the average expenditure of all the 20. What was the total money spent by them.
A.1628.4
B.1534
C.1453
D.1496
Answer: C.1453
Explanation: Solution: Let average expenditure of 20 people be x.
then,
20x = 12*70+8*(x+4);
Or, 20x = 12*70+8x+32;
Or, x = 72.667;
So, total money spent = 72.67*20 = Rs. 1453.4.
Answer: Option 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?
A.20 min past 8pm on wednesday
B.20 min past 7pm on wednesday
C.20 min past 6pm on wednesday
D.20 min past 2pm on wednesday
Answer: B.20 min past 7pm on wednesday
Explanation: 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 tine, it has to gain 5 min.
So the correct time will be shown on wednesdy at 7:20 PM
Answer: B) 20 min past 7pm on wednesday
Question: The two trains of lengths 400 m, 600 m respectively, running at same directions. The faster train can cross the slower train in 180 sec, the speed of the slower train is 48 km. then find the speed of the faster train?
A.28
B.68
C.92
D.66
Answer: B.68
Explanation: Length of the two trains = 600m + 400m
Speed of the first train = X
Speed of the second train= 48 Kmph
1000/X - 48 = 180
1000/x - 48 * 5/18 = 180
50 = 9X - 120
X = 68 Kmph
Answer:B
Question: The compound interest accrued on an amount of Rs.44000 at the end of two years is Rs.1193.60. What would be the simple interest accrued on the same amount at the same rate in the same period?
A.Rs.10,569
B.Rs.10,588
C.Rs.10,560
D.Rs.10,991
Answer: C.Rs.10,560
Explanation: Let the rate of interest be R% p.a.
4400{[1 + R/100]2 - 1} = 11193.60
[1 + R/100]2 = (44000 + 11193.60)/44000
[1 + R/100]2 = 1 + 2544/1000 = 1 + 159/625
[1 + R/100]2 = 784/625 = (28/25)2
1 + R/100 = 28/25
R/100 = 3/25
Therefore R = 12 SI on Rs.44000 at 12% p.a. for two years = 44000(2)(12)/100
=Rs.10560
Answer:C
Question: How many of the integers between 15 and 55 are even ?
A.21
B.20
C.11
D.10
Answer: B.20
Explanation: Number start between 15 to 55 is 40 numbers
half of them is even..which is 20
ANSWER:B
Question: The LCM of two numbers is 2310 and HCF is 83. If one of the numbers is 210. Then what is the other number ?
A.913
B.825
C.330
D.582
Answer: A.913
Explanation: First number * Second Number = LCM * HCF
Other number = 2310 * 83 / 210 = 11*83 = 913
ANSWER :A
Question: A team of 6 cooks is chosen from 8 men and 4 women. The team must have at least 2 men and at least 3 women. How many ways can this team be created?
A.140
B.252
C.560
D.700
Answer: B.252
Explanation: Only possible combinations are a team of 2M, 4 W or 3M,3W.
Possible ways to make a team of 2M,4W = 8C2 * 4C4 =28*1 =28
Possible ways to make a team of 3M,3W = 8C3* 4C3 = 56*4 = 224
Total possible ways = 28+224 = 252
Ans B it is.
Question: Insert the missing number
2, 4, 8, 16, 32, ..., 128, 256
A.46
B.65
C.64
D.63
Answer: C.64
Explanation: series is 2* Previous Number.
ANSWER:C
Question: Farm Tax is levied on the 50% of the cultivated Land. The tax department collected total $ 3840 through the farm Tax from the village of Mr. willam. Mr. willam paid only $ 480 as farm tax. The percentage of total land of Mr. willam over the total taxable land of the village is :
A.15%
B.25%
C.0.125%
D.0.2083%
Answer: B.25%
Explanation: Only trick n this question is to ignore 50% information as farm tax is levied uniformly in the village and that includes Mr William's land.
What percentage of tax Mr William paid ? This will be equal to the percentage of total cultivated land he holds over the total cultivated land in the village. That leads to (480/3840)x100 =12.5%in percentage terms.
But the question asks ratio between his total land to total cultivated land. Hence the answer is 12.5%x (100/50) = 25% and the answer is not there in the options.
The correct answer is (B).
Question: An accurate clock shows 8 o'clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 9 o'clock in the morning?
A.30
B.60
C.90
D.120
Answer: A.30
Explanation: The hour hand will move 1/12 of a circle.
(1/12)*360 = 30 degrees.
The answer is A.
Question: A can do a job in 12 days and B can do it in 20 days. A and B working together will finish twice the amount of work in ------- days?
A.15 days
B.13 days
C.22 days
D.11 days
Answer: A.15 days
Explanation: A
1/12 + 1/20 = 2/15
15/2 *2 = 15 days
Question: A batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after 17th inning.
A.26
B.39
C.42
D.56
Answer: B.39
Explanation: Let the average after 17th inning = x
Then, average after 16th inning = x-3
16(x-3)+87 = 17x
x = 87-48 = 39
Answer is B
Question: The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 15 metres?
A.5
B.10
C.3
D.12
Answer: C.3
Explanation: Speed of the boat downstream = 15 + 3 = 18 kmph
= 18 * 5/18 = 5 m/s
Hence time taken to cover 60 m = 15/5 = 3 seconds.
Answer: C
Question: The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday?
A.34
B.28
C.27
D.23
Answer: D.23
Explanation: M + Tu + W + Th = 4 * 48 = 192
Tu + W + Th + F = 4 * 46 = 184
M = 42
Tu + W + Th = 192 -42 = 150
F = 184 – 150
= 34
Answer: D
Question: If A = {9, 17, 25, 28, 29, 30}, how much less is the mean of the numbers in A than the median of the numbers in S?
A.1.0
B.9.6
C.3.5
D.3.2
Answer: C.3.5
Explanation: This is a good question to understand the difference between mean and median.
Mean: Average of all the numbers. (Sum of all the elements divided by the number of elements)
Median: Arrange the elements of the set in increasing order. If the number of terms is odd, the middle term is the median. If the number of terms is even, the average of middle two terms is the median
Coming to this question,
Mean = (9 + 17 + 25 + 28 + 29 + 30)/6 = 23
Median = (25 + 28)/2 = 26.5
Difference = 3.5
Option C
Question: A piece of ribbon 4 yards long is used to make bows requiring 15 inches of ribbon for each. What is the maximum number of bows that can be made?
A.7
B.9
C.4
D.5
Answer: B.9
Explanation: Explanation:
The maximum number of bows will be 4 yards (= 4 x 36 inches) divided by 15 inches.
This gives 9.6. But as a fraction of a bow is no use, we can only make 9 bows.
Answer: B) 9