document.write( "Question 813149: Denise drove to her parents' house at a rate of 70 mph. She came back by the same route, but drove at a rate of 80 mph. If the round trip took no more than 3 hours, what is the greatest possible distance she could have traveled to her parents? \n" ); document.write( "
Algebra.Com's Answer #489611 by richwmiller(17219)\"\" \"About 
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a+b<=3,
\n" ); document.write( "70a=80b
\n" ); document.write( "a = 8/5, b = 7/5
\n" ); document.write( "112 miles maximum
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