Time and Work T...

A pit can be dug by 4 men in 16 days. How many days will 8 men take for the same work?

An inlet pipe fills a cistern in 3 hours. However, due to leakage at the bottom, it takes half an hour longer. When the cistern is full, how long would the leak take to empty the cistern?

A contractor undertakes a certain work to be completed in 55 days and employs 48 men to do it. In 11 days, only 1/6^th of the work has been done. How many extra men should he employ in order to complete the work in the allotted time?

How many patients does the doctor examine in a day if he examines 5 patients in 3 hours with breaks of 10 minutes between two consecutive patients and he works for 10 hours and 15 minutes per day?

A alone can do a piece of work in 6 days and B alone can do it in 8 days. How many days will it take both A and B together to finish twice the same work?

If 10 men can clean 2 acres of lawn in 12 days, then how many men can clean 3 acres of lawn in 6 days?

A group of 4 men can dig a pit in 15 days. If a man works half as much more as a boy, then 8 men and 6 boys can dig it in

When sugar is 10 kg for Rs. 100, a sum of money maintains a family of 18 men for 15 days. How long will the same amount of money maintain a family of 6 men when sugar is 14 kg for Rs. 100?

A and B together can do a piece of work in 12 days, B and C together can do that work in 18 days, and A and C together can do the same work in 36 days. In how many days can they do five times the same work if all of them work together?

A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 days. They all work for 10 days, then B and C leave. How many more days will A take to finish the work?

If 5 men or 9 women can do a piece of work in 19 days, how long will it take to complete the same work with 3 men and 6 women?

One tap can fill a cistern in 2 hours and another tap can empty the cistern in 3 hours. How long will it take to fill the cistern if both the taps are opened?

A tank can be emptied by three taps in 3 hours. The first tap alone can empty it in 6 hours and second tap alone can empty it in 9 hours. How many hours will the third tap alone take to empty the tank?

Two pipes A and B would fill a cistern in 37 min and 45 min, respectively. If both the pipes are opened, when should the second pipe be turned off so that the cistern may be filled in half an hour?

A pumping set of 1.5 kilowatts (kW) can raise 1500 litres of water from a well of certain depth in certain time. A pumping set of how many kilowatts (kW) is needed to raise 4500 litres of water from the well of the same depth and in the same time?

If two pipes function simultaneously, the reservoir will be filled in 12 hours. The first pipe fills the reservoir 10 hours faster than the other. How many hours will the second pipe take to fill the reservoir?

Eina, Mina and Dika are three carpenters. They take a contract and start simultaneously to finish this task. Mina can finish the work in 16 days; Eina is twice as much efficient as Mina, whereas Dika is as much efficient as Mina. Eina and Mina leave after 2 and 4 days, respectively. How many more days will Dika take to finish the work?

20 men could do a piece of work in 30 days working 4 hours a day, 30 men worked for 20 days for 3 hours a day. Then all were laid off, except one. How many more days would it take the last man to complete the remaining work, working 10 hours a day?

It was estimated that 20 men would complete a work in 50 days working for 5 hours a day. But after 15 days from the start of work, 10 men dropped out of work. How many hours per day did the remaining men have to work to complete the work on time?

A and B worked together and completed a work in 24 days. They got some money for their work. If they distribute that money according to their work, A would get 50% more money than B. In how many days could B alone complete the work?