TNPSC Group IV · Aptitude and Mental Ability Test
Pipes, cisterns and combined work problems.
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Q1 · Time and Work · EASY
A can complete a work in 12 days and B can complete the same work in 18 days. If both A and B work together, how many days will they take to complete the work?
Q2 · Time and Work · MEDIUM
A pipe can fill a tank in 15 hours. Due to a leak at the bottom, it takes 20 hours to fill the tank. If the tank is full, how long will the leak take to empty it?
Q3 · Time and Work · MEDIUM
A and B can do a piece of work in 10 days, B and C can do it in 15 days, and A and C can do it in 20 days. How many days will A alone take to complete the work?
Q4 · Time and Work · EASY
12 men can complete a work in 8 days. After 3 days, 4 more men joined them. In how many more days will the work be completed?
Q5 · Time and Work · MEDIUM
Two pipes A and B can fill a tank in 12 minutes and 16 minutes respectively. Both pipes are opened together, but after 4 minutes, pipe B is closed. How much total time will it take to fill the tank?