Two cars math question

Question

Having trouble with:

 

Two cars traveled for the same amount of time. The red car traveled 270 miles and the silver car traveled 180 miles.

The red car drove 20mph faster than the silver car. what was the speed, in mph, if the silver car?

 

Part A

Define a variable

 

Part B

Write an equation using the variable

 

Part C

Solve the equation from part B

 

Thank you in advance

Answer 1

r represents the rate of the silver car

r + 20 represents the rate of the red car

 

180 = rt ⇒ 180/r = t

270 = (r + 20)t ⇒ 270/(r + 20) = t

 

180/r = 270/(r + 20)

 

Can you solve for r and answer?