document.write( "Question 816996: Phillip has $2.10 in nickels and dimes. If he has a total of 31 coins, how many of the coins are nickels? \n" ); document.write( "

Algebra.Com's Answer #491828 by TimothyLamb(4379) $\"\"$ $\"About$

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5n + 10d = 210
\n" ); document.write( "n + d = 31
\n" ); document.write( "d = 31 - n
\n" ); document.write( "---
\n" ); document.write( "5n + 10d = 210
\n" ); document.write( "5n + 10(31 - n) = 210
\n" ); document.write( "5n + 310 - 10n = 210
\n" ); document.write( "5n = 100
\n" ); document.write( "---
\n" ); document.write( "n = 20
\n" ); document.write( "d = 11
\n" ); document.write( "---
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