SOLUTION: Natasha rides her bike (at a constant speed) for 4 hours, helped by a wind of 3 miles per hour. Pedaling at the same rate, the trip back against the wind takes 10 hours. Find the

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Natasha rides her bike (at a constant speed) for 4 hours, helped by a wind of 3 miles per hour. Pedaling at the same rate, the trip back against the wind takes 10 hours. Find the      Log On

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Question 820508: Natasha rides her bike (at a constant speed) for 4 hours, helped by a
wind of 3 miles per hour. Pedaling at the same rate, the trip back against
the wind takes 10 hours. Find the total round trip distance she
traveled.

Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
s = d / t
d = s * t
----
D = (s + 3)4 = (s - 3)10
4s + 12 = 10s - 30
6s = 42
---
s = 7 mph
2D = 2( 4(7) + 12 )
2D = 80
---
answer:
round trip distance: 80 miles
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