exam Maths Puzzle

When Abhinav and Bipul are working alone, they can complete a piece of work in 25 days and 30 days respectively. On day 1, Bipul started the work and Abhinav joined B from day 3 on-wards. Find after how many days will the work be completed?

A.

13

B.

11

C.

15

D.

16

Read Solution (Total 1)

one day work of bipul=1/30
so in two days he will complete 1/15 of work
remaining work=1-1/15=14/15
both together take 150/11 days to complete 1 work
14/15 work is completed in 14/15 *150/11 days=13 days
9 years agoHelpfull: Yes(0) No(1)

exam Other Question

The digging work of the DMRC on the Adohini-Andheriamore stretch requires Twenty-four men to complete the work in sixteen days. As a part of the task if DMRC were to hire Thirty-two women, they can complete the same work in twenty-four days. Sixteen men and sixteen women started working and worked for twelve days. Due to time bound schedule the work had to be completed in remaining 2 days, for which how many more men are to be employed?

A.

48

B.

24

C.

36

D.

16
A pump can be used either to fill or to empty a tank. The capacity of the tank is 3600m3. The emptying capacity of the pump is 10m3/min higher than its filling capacity. What is the emptying capacity of the pump if the pump needs 12 more minutes to fill the tank than to empty it?

A.

10
m3
min

B.

60
m3
min

C.

45
m3
min

D.

90
m3
min