one plane is ascending at a rate of 40ft per minute. Another plane is ascending at a rate of 3800ft of 120ft per minute. How long will it take the planes to be at the same altitude

Question

one plane is ascending at a rate of 40ft per minute. Another plane is ascending at a rate of 3800ft of 120ft per minute. How long will it take the planes to be at the same altitude

Answer 1

There is something wrong with the question. I assume that the first plane is rising from 3800 feet at a rate of 40 ft/min and the other plane is rising from the ground at 120 ft/min. They will meet when they are at the same height at the same time or when

3800 + 40t = 120t Solve for t.