Two airplanes leave the Atlanta airport at the same time, traveling in opposite directions. One plane travels 30 miles per hour faster than the other. after 3 hours, the planes are 3150 miles apart. what is the rate of each plane?
Let the speed of the slower plane=S
The speed of the faster plane =S+30
3S + 3(S+30) =3150, solve for S
S=510mph - the speed of the slower plane.
510 + 30 =540mph-the speed of the faster plane.
