SOLUTION: A plane can fly 520 miles in the same time as it takes a car to go 160 miles. If the car travels 90 mph slower than the plane, find the speed of the plane.
Algebra.Com
Question 770922: A plane can fly 520 miles in the same time as it takes a car to go 160 miles. If the car travels 90 mph slower than the plane, find the speed of the plane.
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
520/x = 160/x - 90
Cross multiply
520(x - 90) = 160x
520x - 46800 = 160x
520x - 160x = 46800
360x = 46800
x = 130
Speed of plane = 130mph
Car's speed = 40mph
Proof:
520/130 = 160/40
40 = 40
Hope this helps.
:-)
RELATED QUESTIONS
A plane can fly 480 miles in the same time as it takes a car to go 160 miles. If the car... (answered by rfer)
A plane can fly 480 miles in the same time as it takes a car to go 210 miles. If the car... (answered by scott8148)
A plane can fly 640 miles in the same time as it takes a car to go 280 miles. If the car... (answered by josgarithmetic)
A plane can fly 300 miles in the same time as it takes a car to go 180 miles. If the car... (answered by josmiceli)
A plane can fly 280 miles in the same time as it takes a car to go 100 miles. If the car... (answered by Theo,MathTherapy)
a plane can fly 300 miles in th same time as it takes a car to go 120 miles. if the car... (answered by richwmiller)
A plane can fly 600 miles in the same time it takes a car to go 240 miles. If the car... (answered by josmiceli)
a plane can fly 980 miles in the same time it takes a car to go 350 miles. If the car... (answered by fractalier)
A plane can fly 320 miles in the same time as it takes a car to go 120 miles. If the car... (answered by josgarithmetic)