document.write( "Question 1054057: conor collects 10 cent 20 cent and 50 cent coins. he saves 13.50. he saved twice as many 10 cent coins as 50 cent coins and 4 times as many 20 cent coins as 50 cent coins. how many 50 cent coins did he save?\r
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Algebra.Com's Answer #669272 by ikleyn(52790) $\"\"$ $\"About$

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\n" ); document.write( "conor collects 10 cent 20 cent and 50 cent coins. he saves 13.50. he saved twice as many 10 cent coins as 50 cent coins
\n" ); document.write( "and 4 times as many 20 cent coins as 50 cent coins. how many 50 cent coins did he save?
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document.write( "Let x be the # of 50-cent coins.\r\n" );
document.write( "Then the number of 10-cent coins is 2x, \r\n" );
document.write( "and  the number of 20-cent coins is 4x. \r\n" );
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document.write( "then 50-cent coins contribute 50x cents to the total;\r\n" );
document.write( "     10-cent coins contribute 10(2x) cents to the total;\r\n" );
document.write( "     20-cent coins contribute 20(4x) cents to the total.\r\n" );
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document.write( "The \"value equation\" is\r\n" );
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document.write( "     50x + 10(2x) + 20(4x) = 1350 cents,  or\r\n" );
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document.write( "     50x + 20x + 80x = 1350,   or\r\n" );
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document.write( "     150x = 1350  --->  x =  = 9. \r\n" );
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document.write( "Answer.  The number of 50-cent coins was 9.\r\n" );
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