time on bike = t hrs
time walking = 9-t hrs
distance on bike = 20t miles
distance walking = 4(9-t) mile
20t + 4(9-t) = 96
solve for t
please explain the steps:
Jim Williamson began a 96-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 4 miles per hour and rides at 20 miles per hour, find the amount of time he spent on the bicycle.
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1 answer