document.write( "Question 198645: Joe has a collection of nickels and dimes that is worth $6.80. If the number of dimes were doubled and the number of nickels increased by 6, the value of the coins would be $11.10 How many dimes does he have?\r
\n" ); document.write( "\n" ); document.write( "Nickels = X
\n" ); document.write( "Dimes = Y
\n" ); document.write( "X+Y=6.80
\n" ); document.write( "X+6+2Y=$11.10\r
\n" ); document.write( "\n" ); document.write( "-(x+y=6.80)
\n" ); document.write( "-x-y=-6.80
\n" ); document.write( "x+6+y=11.10
\n" ); document.write( "6+y=4.30
\n" ); document.write( "y=-1.7\r
\n" ); document.write( "\n" ); document.write( "This is not the answer, but its what I keep going back to.
\n" ); document.write( "

Algebra.Com's Answer #149145 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
try this ___ X(.05) + Y(.10) = 6.80\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "and this ___ (X+6)(.05) + (2Y)(.10) = 11.10
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