SOLUTION: A train travels 20 mi/hr faster than a car. If the train covers 160 miles in the same time the car covers 80 miles, what is the speed of each of them?

Algebra ->  Equations -> SOLUTION: A train travels 20 mi/hr faster than a car. If the train covers 160 miles in the same time the car covers 80 miles, what is the speed of each of them?       Log On


   

Question 90006: A train travels 20 mi/hr faster than a car. If the train covers 160 miles in the same time the car covers 80 miles, what is the speed of each of them?
Answer by padejr(3) About Me  (Show Source):
You can put this solution on YOUR website!
Let Car's speed = x mile/hr

Then Train's speed = x+20 mile/hr
From the speed formula Speed = Distance/Time
so we get Time = Speed/Distance
And train cover 160 mile in the same time the car cover 80 mile
Then we get 160/(x+20) = 80/x
Solve for x we get x = 20

Car's speed = 20 Mile/hr
Train's speed = 40 Mile/hr