document.write( "Question 397607: Bob has 5 coins in mickels and dimes. Altogether he has $.40. How many dimes and nickels does he have?
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Algebra.Com's Answer #281777 by Fombitz(32388)\"\" \"About 
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Let N be the number of nickels, D the number of dimes.
\n" ); document.write( "1.\"N%2BD=5\"
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\n" ); document.write( "\"5N%2B10D=40\"
\n" ); document.write( "2.\"N%2B2D=8\"
\n" ); document.write( "Subtract eq. 1 from eq. 2,
\n" ); document.write( "\"N%2B2D-N-D=8-5\"
\n" ); document.write( "\"D=3\"
\n" ); document.write( "Then from eq. 1,
\n" ); document.write( "\"N%2B3=5\"
\n" ); document.write( "\"N=2\"
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