document.write( "Question 212372: Joe drove 210km at 70km/h and then another 210 km at 105km/h. It took Bill the same length of time to drive the entire 420km at constant speed. What was Bill's speed? \n" ); document.write( "
Algebra.Com's Answer #160623 by HyperBrain(694)![]() ![]() ![]() You can put this solution on YOUR website! time=distance/speed. \n" ); document.write( "--- \n" ); document.write( "So, the total time it took for Joe to drive is: \n" ); document.write( " \n" ); document.write( "--- \n" ); document.write( "speed=distance/time \n" ); document.write( "=-= \n" ); document.write( "So, Bill's speed is: \n" ); document.write( " |