Hey..!!

There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50min.

In how much time, the third pipe alone can empty the cistern

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Two pipes A and B can separately fill a cistern in 60 min an

Two pipes A and B can separately fill a cistern in 10 and 15

Two pipes A and B can separately fill a cistern in 10 and 15

Two pipes A and B together can fill a cistern in 4hours.

Ha

Ha

Two pipes A and B together can fill a cistern in 4hours.

Ha

Ha

There are 12 pipes attached to atank.

Some of them are fill

Some of them are fill

A tank is filled by three pipes with uniformflow.

The first

The first

Two pipes can separately fill a tank in 20 and 30 hours resp

A tank is filled by three pipes with uniformflow.

The first

The first

A tank is filled by three pipes with uniformflow.

The first

The first