document.write( "Question 103439: A car travels a distance of 1742 miles at an average rate of 40 mph and returns at an average rate of 55 mph. Find the average rate for the round trip to the nearest tenth? \n" ); document.write( "
Algebra.Com's Answer #75264 by checkley75(3666)\"\" \"About 
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1742/40+1742/55=2*1742/X
\n" ); document.write( "43.55+31.67=3484/X
\n" ); document.write( "75.22=3484/X CROSS MULTIPLY
\n" ); document.write( "75.22X=3484
\n" ); document.write( "X=3484/75.22
\n" ); document.write( "X=46.3 MPH IS THE AVERAGE SPEED FOR THE ENTIRE TRIP.
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