document.write( "Question 528062: Can you please help me solve this problem. Underneath the problem is the work I have done so far.\r
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document.write( "Judy averaged 42 miles per hour(mph) driving from Allentown to Harrisburg and 51 mph driving from Harrisburg to Pittsburg. If she drove a total of 288 miles in 6 hours, then how long did it take her to drive from Harrisburg to Pittsburg?\r
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document.write( " Amt. (miles) Rate(mph) Total (Hrs)
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document.write( " x 42 42x
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document.write( " y 51 51y
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document.write( " 288 6 \r
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document.write( "Equations: x+y=288 and i think 42x+51y=6 \n" );
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Algebra.Com's Answer #349141 by KMST(5328)![]() ![]() You can put this solution on YOUR website! If x and y are amounts in miles (distances), you would not multiply them by the speed in mph to find the time in hours. \n" ); document.write( "If you drive to a city 60 miles away at a speed of 60 mph, how many hours does it take you? \n" ); document.write( "(60miles)/(60miles/1hour) = 1 hour \n" ); document.write( "You divide the distance in miles by the speed. The faster you drive, the less time it will take. \n" ); document.write( " \n" ); document.write( "It may be easier to solve if a is the time for the Allentown to Harrisburg trip in hours, and b is the time for the Harrisburg to Pittsburg trip. After all, what you have to find is b, the time for the Harrisburg to Pittsburg trip. But I think I would set the problem this way, even if they asked for distances. \n" ); document.write( "So \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Find b for your answer. \n" ); document.write( " \n" ); document.write( " |