document.write( "Question 1122379: A child has a piggy bank that contains only quarters and dimes. All together there are 27 coins in the bank and the total value of the coins is $4.50. How many quarters and how many dimes are in the piggy bank? \n" ); document.write( "
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A child has a piggy bank that contains only quarters and dimes. All together there are 27 coins in the bank and the total value of the coins is $4.50. How many quarters and how many dimes are in the piggy bank?
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\n" ); document.write( "d + q = 27
\n" ); document.write( "10d + 25q = 450
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\n" ); document.write( "Sub for d in the 2nd eqn and find q, or vice versa.
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\n" ); document.write( "Or,
\n" ); document.write( "27 dimes = 270
\n" ); document.write( "Each dime replaced by a quarter adds 15 cents.
\n" ); document.write( "450 - 270 = 180
\n" ); document.write( "180/15 = 12 quarters
\n" ); document.write( "15 dimes.\r
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