Question

A Piper Cub has an average air speed that is 10mph faster than a Cessna 150 airplane. If the combined distance traveled by these two small planes is 690 miles after 3 hr, what is the average speed of each plane?

Answer 1

let x be speed 1, y be speed 2. 3(x+y) = 690. x = y + 10. Can you solve this?

Answer 2

umm, sure hold on

Answer 3

Y= 110
X= 120

Answer 4

I'd like to know if I'm correct.