1.

The Water From One Outlet, Flowing At A Constant Rate, Can Fill The Swimming Pool In 9 Hours. The Water From Second Outlet, Flowing At A Constant Rate Can Fill Up The Same Pool In Approximately In 5 Hours. If Both The Outlets Are Used At The Same Time, Approximately What Is The Number Of Hours Required To Fill The Pool?

Answer»

Assume tank capacity is 45 Liters.

Given that the FIRST pipe fills the tank in 9 HOURS. So its capacity is 45 / 9 = 5 Liters/ Hour. 

Second pipe fills the tank in 5 hours. So its capacity is 45 / 5 = 9 Liters/Hour. 

If both pipes are opened TOGETHER, then combined capacity is 14 liters/hour. 

To fill a tank of capacity 45 liters, both pipes takes 45 / 14 = 3.21 Hours.

Assume tank capacity is 45 Liters.

Given that the first pipe fills the tank in 9 hours. So its capacity is 45 / 9 = 5 Liters/ Hour. 

Second pipe fills the tank in 5 hours. So its capacity is 45 / 5 = 9 Liters/Hour. 

If both pipes are opened together, then combined capacity is 14 liters/hour. 

To fill a tank of capacity 45 liters, both pipes takes 45 / 14 = 3.21 Hours.



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