Arithmetic aptitude questions

1) If 30% of a number is 12.6, find the number? 

 A.    45

B.    38

C.    40

D.    42

2) What number must be added to 6, 16 and 8 to get an average of 13? 

A.    22

B.    25

C.    20

 D.    18

3) What is the ratio of 12 minute to 1 hour ? 

 A.    2/3

 B.    3/4

C.    1/5

D.    1/4

4) 10 cats caught 10 rats in 10 seconds. How many cats are required to catch 100 rats in 100 seconds 

 A.    100

B.    10

C.    20

 D.    50

5) A man wants to reach a window which is 40 feet above the ground. The distance from the foot of the ladder to the wall is 9 feet. How long should the ladder be ? 

 A.    9 feet

 B.    81 feet

C.    41 feet

 D.    49 feet

6) There are eight mango trees in a straight line. The distance between each mango tree with other is 3 metres. What is the distance between first tree and eighth tree? 

A.    24 m

B.    27 m

C.    30 m

D.    21 m

7) 4 men & 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it? 

 A.    35 days

B.    40 days

 C.    30 days

D.    25 days

8) A student is ranked 13th from right and 8th from left. How many students are there in total? 

 A.    18

 B.    19

 C.    20

 D.    21

9) A goat is tied to one corner of a square plot of side 12m by a rope 7m long.Find the area it can graze? 

 A.    155 sq.m

B.    19.25 sq.m

 C.    144 sq.m

 D.    38.5 sq.m

10) A father is 30 years older than his son. He will be three times as old as his son after 5 years. What is the father's present age? 

A.    35

B.    45

C.    40

 D.    30