SOLUTION: From a point on a straight road, john and fred ride bicycles in opposite directions. john rides 5 miles per hour and fred rides 14 miles per hour. in how many hours will they be 57

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Question 186407: From a point on a straight road, john and fred ride bicycles in opposite directions. john rides 5 miles per hour and fred rides 14 miles per hour. in how many hours will they be 57 miles apart?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
They are driving away from eachother
at a combined speed of 5+%2B+14+=+19 mi/hr
d+=+r%2At
57+=+19%2At
t+=+3
They will be 57 mi from eachother in 3 hrs