Mountain climber A is at an altitude of 250 feet and is descending at a rate of 30 feet per hour. Mountain climber B is at an altitude of 400 feet and is descending at a rate of 50 feet per hour. In how many hours will the altitude of mountain climber b be lower than the altitude of mountain climber a

Question

Mathematics

Santino

13 April, 13:22

Mountain climber A is at an altitude of 250 feet and is descending at a rate of 30 feet per hour. Mountain climber B is at an altitude of 400 feet and is descending at a rate of 50 feet per hour. In how many hours will the altitude of mountain climber b be lower than the altitude of mountain climber a

+1

Answers (1)

Know the Answer?

Jerome Dunn · Answer 1

250 - 30h > 400 - 50h

-30h + 50h > 400 - 250

20h > 150

h > 150/20

h > 7.5 ... any number above 7.5 hrs ... because 7.5 hrs puts them at the same altitude