document.write( "Question 978460: If a plane flies 200 mph in calm air and the rate of the wind is r miles per hour, then the rate of the plane flying with the wind can be represented as \r
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Algebra.Com's Answer #599867 by Alan3354(69443) $\"\"$ $\"About$

You can put this solution on YOUR website!
The \"rate of the plane\" is the groundspeed I assume.
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\n" ); document.write( "It's 200 + r downwind, and 200 - r upwind.
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