1). 25 men can take 30 days to make 200 toys by working 6 hours/day. Find another group of 20 men can take how many days to make 400 toys by working 5 hours/day but efficiency of the first group is 3/2 times of the 2nd group ?

a) 90 days

b) 45 days

c) 135 days

d) 40 days

e) None of these

2). A certain amount becomes triple in 5 years. This amount becomes 27 times in how many years if the interest is same ?

a) 15 years

b) 65 years

c) 45 years

d) 60 years

e) None of these

3). A group of 4 boys and 2 men can finish a work in 6 days, while another group of 5 boys and 6 men can 12 days finish the work in 4 days. In how many days 2 men and 4 boys will finish the work ?

a) 5 days

b) 12 days

c) 6 days

d) 2 days

e) None of these

4). In a printing shop, 25 men can print a book of counting 200 pages in 30 days while working 6 hours per day, this book contains, 10 lines per page and each line contains 20 words. Find how many days another group of 30 men will take to print a book of 400 pages while working 5 hours per day. While this book contains 20 lines per page and each line contains 10 words. The efficiency of first group is 50% more then the second group ?

a) 45 days

b) 90 days

c) 65 days

d) 40 days

e) None of these

5). Tap A can empty a tank in 12 hours, while tap B can fill 5 liters water/minute in tank. If both taps open together the tank emptied in 15 hours. Find the capacity of the tank ?

a) 20,000 liters

b) 18000 liters

c) 19000 liters

d) 17500 liters

e) None of these

6). When price of milk increased by 25% by what percentage a household should reduce consumption of the milk, so that total expenditure increased by only 10% ?

a) 15 %

b) 16 %

c) 18 %

d) 12 %

e) None of these

7). If a shopkeeper sales a cow at 16 2/3% profit and a buffalo at 12 1/2 % loss, he gains Rs. 30 in whole transaction. If he sales a cow at 12 ½ % loss and the buffalo at 16 2/3% profit he neither gains nor losses. Find sum of their prices ?

a) Rs. 620

b) Rs. 720

c) Rs. 725

d) Rs. 625

e) None of these

8). When a train is running at a speed of 7/11 of its usual speed, it takes 22 hours to cover a certain distance. Find the actual time to cover the certain distance ?

a) 14 hours

b) 8 hours

c) 20 hours

d) 12 hours

e) None of these

9). Three taps A, B and C can file a tank in 12 hours, 15 hours and 20 hours respectively. First tap opened at 7 am., 2nd tap opened at 10 am. and 3rd tap opened at 11 am. At what time the tank will fill completely ?

a) 3 pm.

b) 2 pm.

c) 6 pm.

d) 1 pm.

e) None of these

10). Two trains running in opposite directions cross a man standing on platform in 28 sec and 15 sec respectively, and they cross to each other in 22 sec. Find the ratio of their speed ?

a) 6 : 7

b) 7 : 6

c) 4 : 3

d) 5 : 7

e) None of these

Answers:

1) c 2) b 3) c 4) b 5) b 6) d 7) b 8) a 9) b 10) b

Solution:

1). C) (25 × 30 × 6 × 3) / 200 = (21 × D × 5 × 2)/400

D = 135 days

2). B)

3). C) (4B +2M )6 = (5B + 6M )4

4B = 12m = [(12M + 2M) ×6] / (2M + 12M) = (14M × 6)/14M = 6 days

4). B) (25 × 30 × 6 × 3) / (200 × 10 × 20) = (30× D × 5 × 2) / (400 × 2 0× 10)

D = 90 days

5). B) Work done by pipe B in 1 hours

Let capacity of tank = x liter

Pipe B can fill it in x/300 hr

(1/12) – (300/x) = 1/12 à( 1/12) – (1/15) = 300/x

1/60 = 300/x

x = 300×60 = 18000 liters

6). D) Old price = 100, New price = 125

Price = 4 : 5, Quantity = 5 : 4.4

Expenditure = Price × Quantity = 4×5 = (20 × 110) / 100

22/5 = 4.4, (0.6/5) × 100 = 12%

7). B)

8). A) New speed = 7/11 of the usual speed

New time taken = 11/7 of the usual time

22 = 11/7 of the usual time,

usual time = 14hrs.

9). B) A opened for ( 7 – 11)am. = 4hrs.

B opened for ( 10 – 11)am = 1hrs.

(4/12) + (1/15) + (4t/20) = 1, (20 + 4 + 12t) / 60 , 12t = 36

t = 3 hrs. After 11am, i.e – 2:00 pm

10). B) Let speed of the train is x and y m/sec.

Length of first train = 28x

Length of Second train = 15y sec.

(28x + 15y) / (x + y) = 22

28x + 15 y = 22x + 22y

6x = 7y , x : y = 7 : 6