exam Maths Puzzle

Pipes A and B can fill a tank in 12 min and 16 min respectively. Both are kept open for 'n' min and then B is closed and A fills the rest of the tank in 5 min. The time 'n' after which B was closed is:

A.

3 min

B.

2 min

C.

5 min

D.

4 min

Read Solution (Total 0)

exam Other Question
.

A, B and C, can complete a piece of work individually in 15, 30 and 40 days respectively. They started the work together and the A and B let 2 days and 4 days before the completion of the work respectively. In how many days was the work completed?

A.

10
13
15

B.

12

C.

15

D.

10
2
15
A man can do a piece of work in 60 hours. If he takes his son with him and both work together then the work is finished in 40 hours. How many hours will the son take to do the same job, if he worked alone on the job?

A.

20

B.

60

C.

100

D.

120