document.write( "Question 951834: For her workout, Sarah walks north at the rate of 4 mph and returns at the rate of 5 mph. How many miles does she walk if the round trip takes 4.5 hours? \n" ); document.write( "
Algebra.Com's Answer #581299 by andora(7) ![]() You can put this solution on YOUR website! if mph is mile per hour then we assume it took her 2.5 hours to go north and 2 hours to come back and the we multiply 2.5x4=10miles and 2x5=10miles then we 10+10=20miles \n" ); document.write( " |