document.write( "Question 581323: A cyclist rode the first 16 mile-portion of his workout at a constant speed. For the 12 mile cool down portion of his workout, he reduced his speed by 2 miles per hour. Each portion took the same time. Find his speed during the first portion and the second cool down portion. \n" ); document.write( "
Algebra.Com's Answer #371560 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A cyclist rode the first 16 mile-portion of his workout at a constant speed. For the 12 mile cool down portion of his workout, he reduced his speed by 2 miles per hour. Each portion took the same time. Find his speed during the first portion and the second cool down portion. \n" ); document.write( "---- \n" ); document.write( "1st portion DATA: \n" ); document.write( "distance = 16 miles ; rate = x mph ; time = d/r = 16/x hrs \n" ); document.write( "---- \n" ); document.write( "2nd portion DATA: \n" ); document.write( "distance = 12 miles ; rate = (x-2)mph ; time = 12/(x-2) hrs \n" ); document.write( "------- \n" ); document.write( "Equation: \n" ); document.write( "time = time \n" ); document.write( "16/x = 12/(x-2) \n" ); document.write( "16x-32 = 12x \n" ); document.write( "4x = 32 \n" ); document.write( "x = 8 mph (rate of 1st portion) \n" ); document.write( "--- \n" ); document.write( "x-2 = 6 mph (rate on 2nd portion) \n" ); document.write( "=============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |