Question

There are two water tanks, Tank #1 fills into Tank #2.

Tank #1 has 200 gallons in it and losing 2 gallons each minute. Tank #2 has 60 gallons in it.

How long will it take for both Tanks to have the same amount of water in them?

Answer 1

35 minutes

Explanation:

The total amount of water is 200 +60 = 260 gallons. The two tanks will have equal amounts when each has half that, or 130 gallons.

If the volume in tank 2 is increasing at 2 gallons per minute, it will increase by 70 gallons from 60 gallons to 130 gallons in 70/2 = 35 minutes.