SOLUTION: a plane can fly 300 miles in th same time as it takes a car to go 120 miles. if the car travels 90 mph slower than the plane, find the speed of the plane.

Algebra ->  Rate-of-work-word-problems -> SOLUTION: a plane can fly 300 miles in th same time as it takes a car to go 120 miles. if the car travels 90 mph slower than the plane, find the speed of the plane.      Log On


   



Question 287944: a plane can fly 300 miles in th same time as it takes a car to go 120 miles. if the car travels 90 mph slower than the plane, find the speed of the plane.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
r*t=d
r*t=300
(r-90)*t=120
r=150
t=2