SOLUTION: Jim rode a distance of 12 miles out into the country on a bike and returned on foot. His rate on the bike was 4 times his rate by foot. He spent 5 hours on the entire trip. Find hi
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Question 978941: Jim rode a distance of 12 miles out into the country on a bike and returned on foot. His rate on the bike was 4 times his rate by foot. He spent 5 hours on the entire trip. Find his rate of walking. You must state your equation and then your answer.
I have 12/4x + 12/x = 5
12x = 12(4x) = 20 x^2
60 x = 20x^2
After this is an stuck
Answer by ikleyn(52776) (Show Source): You can put this solution on YOUR website!
+ = .
Multiply both sides by 4x:
12 + 48 = 20x,
60 = 20x,
x = 3.
Answer. Jim's walking rate is 3 .
What can be simpler?
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