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It takes 20 minutes to fill a wading pool. The pool has developed a leak through which it will empty in 30 minutes. If the hole is not fixed, how long will it take to fill the w…

It takes 20 minutes to fill a wading pool. The pool has developed a leak through which it will empty in 30 minutes. If the hole is not fixed, how long will it take to fill the w…
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5 votes
It takes 20 minutes to fill a wading pool. The pool has developed a leak through which it will empty in 30 minutes.

If the hole is not fixed, how long will it take to fill the wading pool?

asked
User Akaliza
by
8.0k points

1 Answer

3 votes
In t minutes, t/20 of the pool is filled and t/30 of it is emptied.

t/20 - t/30 = 1
multiply both sides by LCM 60.

3t - 2t = 60
t = 60

The pool is filled in 60 minutes.
answered
User Rescobar
by
8.3k points
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