Question 952483: Mark drives 10 mph faster than Alex. In the same time that Alex drives 215 miles Mark drives 240 miles. Find the speed of each car. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Mark drives 10 mph faster than Alex. In the same time that Alex drives 215 miles Mark drives 240 miles. Find the speed of each car.
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Equation:
time = time
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Alex time = 215/x hrs
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Mark time = 240/(x+10) hrs
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215/x = 240/(x+10)
43/x = 48/(x+10)
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43(x+10) = 48x
43x + 430 = 48x
5x = 430
x = 86 mph
x+10 = 96 mph
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Cheers,
Stan H.
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Cheers,
Stan H.
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