SOLUTION: Jim began a ​121-mile bicycle trip to build up stamina for a triathlete competition.​ Unfortunately, his bicycle chain​ broke, so he finished the trip walking. The whole trip

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Question 1175428: Jim began a ​121-mile bicycle trip to build up stamina for a triathlete competition.​ Unfortunately, his bicycle chain​ broke, so he finished the trip walking. The whole trip took 6 hours. If Jim walks at a rate of 5 miles per hour and rides at 31 miles per​ hour, find the amount of time he spent on the bicycle.
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
.

Let t be the time bicycling.

Then the time walking was (6-t).


Now you write the total distance equation


    31*t + 5*(6-t) = 121


Simplify and solve


    31t + 30 - 5t = 121

       26t        = 121 - 30 = 91

         t                   = 91%2F26 = 3.5.


ANSWER.  3.5 hours bikyng.

Solved.