Two planes, which are 2520 miles apart, fly toward each other. Their speeds differ by 80mph. If they pass each other in 4 hours, what is the speed of each?

Answer 1

d = rt

The total distance travelled is 2520 miles, but the faster plane travels more of it.

Let r = the rate of the slower plane. The other plane is travelling r + 80

4r + 4(r + 80) = 2520

The rest is on you!

Answer 2

4(r) + 4( r + 80) = 2520

Can you solve for r and answer?