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
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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) (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
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