document.write( "Question 1195942: Darren drives to school in rush hour traffic and averages 22mph. He returns home in mid-afternoon when there is less traffic and averages 44mph. What is the distance between his home and school if the total traveling time is 1hr 30min?\r
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Algebra.Com's Answer #828574 by ikleyn(53763) You can put this solution on YOUR website! . \n" ); document.write( "Darren drives to school in rush hour traffic and averages 22mph. \n" ); document.write( "He returns home in mid-afternoon when there is less traffic and averages 44mph. \n" ); document.write( "What is the distance between his home and school if the total traveling time is 1hr 30min? \n" ); document.write( "~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "Notice that 44 mph is twice as fast as 22 mph.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "It means, and you can get it intuitively, that one third of the total travel time,\r\n" ); document.write( "which is 1 hour and 30 minutes, is spend with the rate of 44 mph.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Again, the travel time with the rate of 44 mph was 30 minutes, or half an hour.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "It implies that one way distance to the school is 22 miles. ANSWER\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved (mentally).\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |