Quantitative Aptitude Mock Test 32

A pipe can fill a cistern in 10 hours and another pipe can empty the cistern in 6 hours. If both the pipes are opened together, how long will it take to fill the cistern if it is initially empty?

A pipe can fill a cistern in 10 hours and another pipe can empty the cistern in 8 hours. If both the pipes are opened together, how long will it take to empty the cistern if it is initially full?

A, B, and C can complete a work in 10 days, 12 days, and 15 days respectively. If they work together for 3 days, then what part of the work is done?

A, B, and C can complete a work in 10 days, 12 days, and 15 days respectively. They start working together and A leaves after 5 days and B leaves after 7 days. How many days will C take to complete the remaining work?

A cistern has two inlets, A and B, and one outlet, C. A can fill the cistern in 6 hours, B can fill the cistern in 8 hours, and C can empty the cistern in 10 hours. If the cistern is initially empty and all the three pipes are opened together, how long will it take to fill the cistern?

A cistern has two leaks, A and B, which can empty the cistern in 12 hours and 16 hours respectively. If the cistern is initially full and both the leaks are opened together, how long will it take to empty the cistern?

A cistern has two inlets, A and B, and one outlet, C. A can fill the cistern in 6 hours, B can fill the cistern in 8 hours, and C can empty the cistern in 10 hours. If the cistern is initially empty and the first inlet, A, is opened for 3 hours and then closed, how long will it take for the other two pipes, B and C, to fill the cistern?