document.write( "Question 92870: A man drove 220 miles in 3 1/2 hours. Part of the trip was at 60 miles per hour and the rest at 65 miles per hour. find the time spent at lower speed. \n" ); document.write( "
Algebra.Com's Answer #67579 by checkley75(3666)\"\" \"About 
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220=60T+65(3.5-T)
\n" ); document.write( "220=60T+227.5-65T
\n" ); document.write( "220-227.5=-5T
\n" ); document.write( "-5T=-7.5
\n" ); document.write( "T=-7.5/-5
\n" ); document.write( "T=1.5 HOURS AT THE SLOWER RATE OF 60MPH.
\n" ); document.write( "PROOF
\n" ); document.write( "220=60*1.5+65*2
\n" ); document.write( "220=90+130
\n" ); document.write( "220=220
\n" ); document.write( "
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