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)![]() ![]() ![]() You can put this solution on YOUR website! 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( " \n" ); document.write( " |