Time & Work Mock Tests

A can do a piece of work in 10 days and B in 15 days. They work on alternate days starting with A. The work will be completed in:

A can do a piece of work in 10 days and B can do the same work in 15 days. If they work together for 5 days, what fraction of the work is left?

A can complete a work in 16 days and B can complete the same work in 24 days. If they work on alternate days starting with A, how many days will it take to complete the work?

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

A can complete a work in 10 days and B in 15 days. If they work together, in how many days will the work be completed?

A can complete a piece of work in 6 days and B can complete the same work in 9 days. They work together for 2 days and then A leaves. How many more days will B take to complete the remaining work?

A pipe can fill a tank in 6 hours and another pipe can empty it in 8 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?

Two pipes A and B can fill a cistern in 12 minutes and 18 minutes respectively. Both pipes are opened together, but pipe A is turned off after 6 minutes. How much more time will it take to fill the cistern?