Learning Test - Time & Work,Chain Rule,Pipes & Cisturn

A can finish a work in 24 days. B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days. The remaining work was done by A in:

• 5 days

• 6 days

• 10 days

• 10 1/2 days

Amruta can do a piece of work in 20 days. Narendra is 25% more efficient than Amruta. The number of days taken by Narendra to do the same piece of work is:

• 15

• 16

• 18

• 25

P is thrice as good a workman as Q and, therefore, is able to finish a job in 60 days less than Q. Working together, they can do it in :

• 45 days

• 22 1/2 days

• 30 days

• 12 1/2 days

On a certain day, Ram works at 11/7th of his usual rate of doing work and finished the work 28 minutes earlier than the usual time required. Had Ram worked at 7/11th of his usual rate of doing work then the time taken by him to complete the work would have been how much more than the usual time required?

• 70 min

• 44 min

• 53 min

• 63 min

A and B can do a work in 12 days, B and C can do the same work in 15 days, and C and A can do the same work in 20 days. A, B and C will complete the work together in:

• 14 days

• 12 days

• 10 days

• 15 days

4 mat-weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat-weavers in 8 days?

• 4

• 8

• 12

• 16

If 30 labourers working 7 hours a day can finish a piece of work in 18 days, how many labourers working 6 hours a day can finish it in 30 days

• 15

• 21

• 22

• 25

A certain number of men can finish a piece of work in 100 days. If there were 10 men less, it would take 10 days more for the work to be finished. How many men were there originally?

• 110

• 70

• 90

• 100

A contractor employed 30 men to complete the project in 100 days. But later on he realized that just after 25 days only 20% of the work had been completed.

• 25

• 30

• 22

• 28

5 men or 8 women do equal amount of work in a day. A job requires 3 men and 5 women to finish the job in 10 days how many woman are required to finish the job in 14 days?

• 5

• 9

• 7

• 10