document.write( "Question 766638: A parking lot has cars and motorcycles . altogether there are 18 vechicles and 66 wheels . which system of linear equations represents the problem. let m be the number of motorcycles and c be the number of cars \n" ); document.write( "

Algebra.Com's Answer #467104 by Edwin McCravy(20055) $\"\"$ $\"About$

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A parking lot has cars and motorcycles . altogether there are 18 vechicles and 66 wheels . which system pf linear equations represents the problem. let m be the number of motorcycles and c be the number of cars
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document.write( "  m + c = 18\r\n" );
document.write( "2m + 4c = 66\r\n" );
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document.write( "But you can do the problem in your head:\r\n" );
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document.write( "If they were all motocycles there would be 36 wheels.\r\n" );
document.write( "But there are 66 wheels, so the remaining 30 wheels\r\n" );
document.write( "belong to cars. 30 wheels is 15 pairs of wheels.\r\n" );
document.write( "So there are 15 cars and 18-15 = 3 motorcycles.\r\n" );
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document.write( "Edwin

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