# SOLUTION: Two boys on bikes start at the same time at the same place and travel opposite directions. One travels at the rate of 10 miles per hour and the other at the rate of 6 miles per hou

Algebra ->  Algebra  -> Expressions-with-variables -> SOLUTION: Two boys on bikes start at the same time at the same place and travel opposite directions. One travels at the rate of 10 miles per hour and the other at the rate of 6 miles per hou      Log On

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 Click here to see ALL problems on Expressions-with-variables Question 43324: Two boys on bikes start at the same time at the same place and travel opposite directions. One travels at the rate of 10 miles per hour and the other at the rate of 6 miles per hour. In how many hours will they be 72 miles apart?Answer by josmiceli(9817)   (Show Source): You can put this solution on YOUR website!The boys are getting further apart at a combined rate of their two speeds. combined rate = 10 + 6 = 16 mi/hr d / r = t d = 72 miles 72 / 16 = t t = 4.5 hrs answer