SOLUTION: A motor boat can maintain a constant speed of 37 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 43 minutes. The return trip takes

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Question 984983: A motor boat can maintain a constant speed of 37 miles per hour relative to the water.
The boat makes a trip upstream to a certain point in 43 minutes.
The return trip takes 31 minutes
What is the speed of current?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!

upstream       r-c       u        d
downstrm       r+c       b        d


upstream       r-c       u        d=(r-c)*u
downstrm       r+c       b        d=(r+c)*b


%28r-c%29%2Au=%28r%2Bc%29%2Ab

Solve for c.

system%28r=37%2Cu=43%2F60%2Cb=31%2F60%29
Evaluate c.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

A motor boat can maintain a constant speed of 37 miles per hour relative to the water.
The boat makes a trip upstream to a certain point in 43 minutes.
The return trip takes 31 minutes
What is the speed of current?
Speed of current: highlight_green%286%29 mph