document.write( "Question 673643: I have 27 coins in nickels and dimes. In all I have $1.90. How many of each coin do I have? \n" ); document.write( "

Algebra.Com's Answer #418764 by ptaylor(2198) $\"\"$ $\"About$

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\n" ); document.write( "Let x=number of nickels
\n" ); document.write( "Then 27-x=number of dimes
\n" ); document.write( "Lets deal in pennies
\n" ); document.write( "5x+10(27-x)=190
\n" ); document.write( "5x+270-10x=190 subtract 270 from each side
\n" ); document.write( "5x-10x=190-270
\n" ); document.write( "-5x=-80
\n" ); document.write( "x=16----number of nickels
\n" ); document.write( "27-x=27-16=11 ------number of dimes
\n" ); document.write( "CK
\n" ); document.write( "5*16+11*10=190
\n" ); document.write( "80+110=190
\n" ); document.write( "190=190\r
\n" ); document.write( "\n" ); document.write( "Another way would be:
\n" ); document.write( "Let x=nickels and let y=dimes
\n" ); document.write( "x+y=27
\n" ); document.write( "5x+10y=190
\n" ); document.write( "multiply first equation by 10
\n" ); document.write( "10x+10y=270
\n" ); document.write( "5x+10y=190
\n" ); document.write( "subtract
\n" ); document.write( "5x=80
\n" ); document.write( "x=16
\n" ); document.write( "etc.\r
\n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor \n" ); document.write( "

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