+0  
 
+2
47
2
avatar+493 

Car A travels 120 miles in the same time that car B travels 150 miles. If car B averages 10 mph faster than car A, what is the speed of each car?

ant101  May 26, 2018
edited by ant101  May 26, 2018
 #1
avatar+2709 
+3

Let's say the x is the miles per hour for car A, and x+10 is the number of miles for car B(says in the problem/question)

Since Car A travels 120 miles when Car B travels 150 miles, we can do:\(\frac{120}{x}=\frac{150}{x+10}\).

Cross multiplying, we have 120(x+10)=150x- 120x+1200=150x

We get 30x=1200-x=40

Thus, Car A travels 40 mph, and Car B travels 50 mph.

smileysmiley

tertre  May 26, 2018
 #2
avatar+493 
+3

Thanks so much, tertre!

ant101  May 26, 2018

17 Online Users

avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.