document.write( "Question 251148: a piggy bank has 50 coins. the coins are only nickles and dimes. The bank has $4.55 in total. How many coins are nickles, how many dimes?
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Algebra.Com's Answer #182896 by stanbon(75887) $\"\"$ $\"About$

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a piggy bank has 50 coins. the coins are only nickles and dimes. The bank has $4.55 in total. How many coins are nickles, how many dimes?\r
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\n" ); document.write( "Equations:
\n" ); document.write( "Quantity Equation: n + d = 50
\n" ); document.write( "Value Equation::: 5n+ 10d = 455
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\n" ); document.write( "Multiply thru the Quantity Eq by 5 to get:
\n" ); document.write( "5n + 5d = 250
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\n" ); document.write( "Subtract that from the Value equation and solve for \"d\":
\n" ); document.write( "5d = 205
\n" ); document.write( "d = 41 (# of dimes)
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\n" ); document.write( "Substitute into n+d = 50 and solve for \"n\":
\n" ); document.write( "n+41 = 50
\n" ); document.write( "n = 9 (# of nickels)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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