Marina can bicycle 19.5 miles in the same time it takes her to run 6 miles. She bikes 9 miles per hour faster than she
runs. At what speed does Marina run?
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Answered by
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aproxx 4 miles per hour.....
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Answered by
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Answer:
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Step-by-step explanation:
Running Speed = x
Cycling Speed = x + 9
19.5/x + 9 = 6/x
Cross multiply
19.5x = 6x + 54
Collect like terms:
19.5x - 6x = 54
13.5x = 54
x = 4
Running speed = 4 mph
Cycling speed = 13 mph
Hope this helps.
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