document.write( "Question 532805: Isabel and Andy drove to the service station at a rate of 60 km per hour. They returned home by bicycle at a rate of 15 km per hour. The time for the entire trip took 4 hours. What was the total distance for the round trip?\r
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\n" ); document.write( "\n" ); document.write( "60x=15(4-x)???? Doesn't work out!!!
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Algebra.Com's Answer #350933 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
t = d / r ___ the TOTAL time is 4 hr\r
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\n" ); document.write( "\n" ); document.write( "4 = [(d / 2) / 60] + [(d / 2) / 15]\r
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\n" ); document.write( "\n" ); document.write( "4 = (d / 120) + (d / 30)\r
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\n" ); document.write( "\n" ); document.write( "480 = d + 4d
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