document.write( "Question 1158483: I have 30 coins consisting of 20c coins a 5c coins and my total is $3.45 how many
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Algebra.Com's Answer #781431 by Edwin McCravy(20056) $\"\"$ $\"About$

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I have 30 coins consisting of 20c coins a 5c coins and my total is $3.45 how
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document.write( "Let n = the number of 20c coins,\r\n" );
document.write( "then the number of 5c coins are 30-n.\r\n" );
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document.write( "Then the total money is 20n + 5(30-n).\r\n" );
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document.write( "That must equal 345c\r\n" );
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document.write( "20n + 5(30-n) = 345\r\n" );
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document.write( "Solve that for n.  That will be the number of 20c coins.\r\n" );
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document.write( "Then subtract from 30 to find the number of 20c coins\r\n" );
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document.write( "Edwin

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