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July 28, 2014

July 28, 2014

Posted by **micah** on Saturday, April 14, 2012 at 4:40pm.

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.

- math -
**Reiny**, Saturday, April 14, 2012 at 7:41pmtime 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

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