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If 18 men can cut a field in 35 days, then in how many days can 21 men cut the same field?

A cloth merchant on selling 33 metres of cloths obtains a profit equal to the selling price of 11 metres of cloth. The profit is

Two pipes A and B can fill a cistern in \(12\frac{1}{2} \) hours and 25 hours, respectively. The pipes are opened simultaneously and it is found that due to a leakage in the bottom, it took 1 hour 40 minutes more to fill the cistern. When the cistern is full, in how much time will the leak empty the cistern?

A and B can do a piece of work in 6 days and 8 days, respectively. With the help of C, they completed the work in 3 days and earned Rs. 1848. What was the share of C ?