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From the ground, a hot-air balloon went up at a speed of 375 feet per minute for 5 minutes. It then went down at a speed of 225 feet per minute for 6 minutes. How far is the hot-air balloon above the ground?

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musiclover10045

it went up: 375 *5 = 1875 feet total

it went down: 225 *6 = 1350 feet total

1875-1350 = 525

 it is 525 feet above the ground
It went up (375*5 = 1875) then down (225*6 = 1350).

To find how high it is above ground subtract it's rise (1875) by its fall (1350)