document.write( "Question 390286: An airplane travels 5 hours with a 35mi/h tail wind. The return trip against the same wind took 7 hours. Find the speed of the plane in no wind. \n" ); document.write( "

Algebra.Com's Answer #276713 by chrisrao(11) $\"\"$ $\"About$

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Assume the distances the airplane travalled for two trips are the same:
\n" ); document.write( " $\"5%2A%28V%2B35%29=7%2A%28v-35%29\"$
\n" ); document.write( " $\"5V+%2B+5%2A35+=+7V+-+7%2A35\"$
\n" ); document.write( " $\"12%2A35+=+2V\"$
\n" ); document.write( " $\"V+=+6%2A35\"$
\n" ); document.write( " $\"V+=+210\"$
\n" ); document.write( "V = 210 mi/h \n" ); document.write( "

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