SOLUTION: Jodie bicycles 7km/h faster than Carlos. In the same time if takes Carlos to bicycle 51 km and Jodie can bicycle 72km. How fast does each bicycle travel?

Question 607364: Jodie bicycles 7km/h faster than Carlos. In the same time if takes Carlos to bicycle 51 km and Jodie can bicycle 72km. How fast does each bicycle travel?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Jodie bicycles 7km/h faster than Carlos.
In the same time if takes Carlos to bicycle 51 km and Jodie can bicycle 72km. How fast does each bicycle travel?
:
Let c = C's riding speed
then
(c+7) = J's riding speed
:
Distance varies directly with speed, so we can write it
=
cross multiply
72c = 51(c+7)
72c = 51c + 357
72c - 51c = 357
21c = 357
c =
c = 17 km/hr is C's speed
:
You can find J's speed
:
Check your solutions by finding the time for each, they should be equal

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