document.write( "Question 586620: How would you solve this: Laura and Dale drove in opposite directions. After two hours they were 68 kilometers apart. Laura drove 2 kilometers per hour faster than dale. How fast did Laura drive? \n" ); document.write( "
Algebra.Com's Answer #373841 by eschwartz(9)![]() ![]() ![]() You can put this solution on YOUR website! Where D is the speed in km/h that Dale drives at, \n" ); document.write( "2D+2(D+2)=68\r \n" ); document.write( "\n" ); document.write( "Divide both sides by 2: \n" ); document.write( "D+(D+2)=34km, or 2D+2=34\r \n" ); document.write( "\n" ); document.write( "Subtract 2 from each side: \n" ); document.write( "2D=32\r \n" ); document.write( "\n" ); document.write( "Divide both sides by 2: \n" ); document.write( "D=16\r \n" ); document.write( "\n" ); document.write( "Now, since Dale drives at 16km/h, and Laura drives 2km/h faster, Laura drives at 18km/h.\r \n" ); document.write( "\n" ); document.write( "In two hours, Dale dove 32km, and Laura drove 36km, for a combined total of 68km. \n" ); document.write( " |