SOLUTION: Cody bikes for 24 km and the doubles his rate and bikes another 17 km. His total time is 5 hours. What was Cody's faster rate? I have tired using the chart but I still can't get

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Question 610485: Cody bikes for 24 km and the doubles his rate and bikes another 17 km. His total time is 5 hours. What was Cody's faster rate?
I have tired using the chart but I still can't get it. Help would be very much appreciated :)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Cody bikes for 24 km and the doubles his rate and bikes another 17 km. His total time is 5 hours. What was Cody's faster rate?
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d = r*t
t = d/r
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24/r + 17/2r = 5
48 + 17 = 10r
r = 6.5 km/hr for 24 km
r = 13 km/hr for 17 km