Question

while returning to the gliderport, lucy descended for three minutes at a rate of 400 feet per minute. How much altitude did she lose? If her starting altitue was 2800 feet, what was her final altitude

Answer 1

First lucy decent 3 minutes at a rate of 400 feet per minute therefore in order to know how much she descended we do the next operation

$400\cdot3=1200ft$

If her starting altitude is 2800 ft

$2800-1200=1600$

Her final altitude is 1600 ft