document.write( "Question 920653: paul has a collection of nickels and dimes that has a total value of $12.50. He has 150 coins in all. How many dimes does Paul have? \n" ); document.write( "
Algebra.Com's Answer #558512 by stanbon(75887)\"\" \"About 
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paul has a collection of nickels and dimes that has a total value of $12.50. He has 150 coins in all. How many dimes does Paul have?
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\n" ); document.write( "Value Eq::: 5n + 10d = 1250 cents
\n" ); document.write( "Quantity::: n + d = 150
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\n" ); document.write( "Modify::
\n" ); document.write( "n + 2d = 250
\n" ); document.write( "n + d = 150
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\n" ); document.write( "Subtract and solve for \"d\"::
\n" ); document.write( "d = 100 (# of dimes)
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\n" ); document.write( "n = 150-d = 50 (# of nickels)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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