SOLUTION: A boat is traveling across a river in a straight line from point a to point b. If the boat is traveling at 7 mph and the river is moving at 2 mph. How far down river will the boat

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Question 623914: A boat is traveling across a river in a straight line from point a to point b. If the boat is traveling at 7 mph and the river is moving at 2 mph. How far down river will the boat be from point b?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Call the distance from a to b +d+ miles
If there were no current at all, the boat
would cover +d+ in +t+=+d%2F7+ hours
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In +d%2F7+ hours, the current would have moved
the boat downstream +2%28d%2F7%29+
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The boat would be 2/7 of the distance a-b
from b downstream