document.write( "Question 893133: when blake drives to work on the highway, he averages 45mph. when he uses the local roads he averages 36mph. the trip on the local roads is 3 mi shorter and takes 5 more minutes than the highway trip. how many miles long is the highway trip? \n" ); document.write( "
Algebra.Com's Answer #541096 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! Let \n" ); document.write( "Let \n" ); document.write( "-------------------------------------------- \n" ); document.write( "Now convert \n" ); document.write( "( minutes ) x ( hours / minute ) \n" ); document.write( " \n" ); document.write( "-------------------------- \n" ); document.write( "Equation for driving on highway: \n" ); document.write( "(1) \n" ); document.write( "Equation for driving on local roads: \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "-------------------- \n" ); document.write( "Substitute (1) into (2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "and, since \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "He drove 30 highway miles \n" ); document.write( "------------------------- \n" ); document.write( "check: \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "OK\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |