SOLUTION: 3 laps is 5/8 of a mile. If he runs 3 miles, how many laps does he need to run?

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Question 97698: 3 laps is 5/8 of a mile. If he runs 3 miles, how many laps does he need to run?
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
3 laps/.0625 miles = x laps/3miles [change 5/8 to a decimal by dividing]
(3 laps)(3 miles)=(x laps) (0.625 miles) [set up a ratio relationship and cross-multiply]
.
9=0.625x
9/0.625=0.625x/0.625 [divide each side by 0.625 miles)
14.4 laps =x
.
Checking:
3 laps/0.0625 miles = 14.4 laps/3 miles [divide each side]
4.8=4.8 [checks out]