Question

Drains and me are used to empty a swimming pool. Train eight alone can empty the pool in 4.75 hours. How long will it take train be alone to empty the pool if it takes 2.6 hours would both genes are turned on?

Answer 1

It takes 5.744 hours for drain B to empty the pool.

Explanation:

Let drain A nad be are used to empty a swimming pool.

Given drain A alone can empty the pool in 4.75 hours.

When both A and B are open, it takes 2.6 hours.

The time taken by B to draint the pool = ?

`(t+4.75)/(4.75t) = (1)/(2.6)`

2.6 (t+4.75) = 4.75t

2.6t + 12.35 = 4.75t

t = 5.744 hours

It takes 5.744 hours for drain B to empty the pool.