document.write( "Question 71034: During rush hour, Adriana can drive 20 miles using the side roads in the same time that it takes to travel 15 miles on the freeway. If Adriana's rate on the side roads is 10 mi/h faster than her rate on the freeway, find her rate on the side roads.\r
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #50748 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! DISTANCE=RATE*TIME SO TIME=DISTANCE/RATE \n" ); document.write( "20/(X+10)=15/X CROSS MULTIPLY \n" ); document.write( "20X=15(X+10) \n" ); document.write( "20X=15X+150 \n" ); document.write( "20X-15X=150 \n" ); document.write( "5X=150 \n" ); document.write( "X=150/5 \n" ); document.write( "X=30 MPH ON THE FREEWAY THUS \n" ); document.write( "30+10=40 MPH ON THE SIDE ROADS.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |