Time & Work Mock Tests

A works twice as fast as B. If B can complete a work in 12 days, how many days will A and B together take to complete the work?

A can do a piece of work in 10 days and B can do the same work in 15 days. If they work together, how many days will they take to complete the work?

A pipe can fill a tank in 8 hours and another pipe can empty the same tank in 10 hours. If both pipes are opened simultaneously, the tank will be full in:

A is 50% more efficient than B. If B alone can complete a work in 20 days, both together will complete it in:

A man can complete a piece of work in 12 days and a woman can complete the same work in 18 days. If they work together, how many days will they take to complete the work?

A tap can fill a tank in 8 hours and another tap can empty the same tank in 10 hours. If both taps are opened, in how many hours will the tank be filled?

A can do a piece of work in 10 days and B can do it in 15 days. If they work together, how many days will they take to complete the 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?