SOLUTION: Two cars start from the same place traveling in opposite directions. One car travels 4 miles per hours faster than the other car. Find the speed their speeds if after 5 hours the

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Two cars start from the same place traveling in opposite directions. One car travels 4 miles per hours faster than the other car. Find the speed their speeds if after 5 hours the      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 163912: Two cars start from the same place traveling in opposite directions. One car travels 4 miles per hours faster than the other car. Find the speed their speeds if after 5 hours they are 520 miles apart.
This is how I tried to work it out?
_________________________________________ Distance Time Rate
1st car 4 4X(5)
2d car 4 4+4(5)
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
5x+5(x+4)=520
5x+5x+20=520
10x=520-20
10x=500
x=500/10
x=10 mph. for the slower car.
50=4=54 mph. for the faster car.
Proof:
5*50+5*54=520
250+270=520
520=520