document.write( "Question 39981: To get to his parents house John must travel at a speed of 60m/hr on land then use a motor boat whos speed is 20 mi/hr in still water. John goes by land to a dock and then travels on a river against a current of 4 mi/hr. He reaches his parents home in 4.5 hrs. The return trip takes him 3.5 hrs. How far does his parents live from his house?\r
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Algebra.Com's Answer #25376 by Paul(988)\"\" \"About 
You can put this solution on YOUR website!
Total time = 4.5+3.5=8 hours
\n" ); document.write( "EQUATION:
\n" ); document.write( "\"x%2F60%2Bx%2F%2820-4%29=8\"
\n" ); document.write( "\"x%2F60%2Bx%2F16=8\"
\n" ); document.write( "\"960%28x%2F60%29%2B960%28x%2F16%29=960%288%29\"
\n" ); document.write( "16x+60x=7680
\n" ); document.write( "76x=7680
\n" ); document.write( "x=101 (rounded)
\n" ); document.write( "Hence, the distance is 101 miles.
\n" ); document.write( "Paul.
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