document.write( "Question 352433: 2 diamond rings and 4 silver rings cost $1440. a diamond ring and a silver ring cost $660. how much does a silver ring cost ?\r
\n" ); document.write( "\n" ); document.write( "i know the answer is $60. we did it with process of elimination and could not figure out another way \r
\n" ); document.write( "\n" ); document.write( "we got 2x +4y=1440
\n" ); document.write( "x =y =660
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Algebra.Com's Answer #251848 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
let diamond ring be $x
\n" ); document.write( "Silver ring be $y
\n" ); document.write( "..
\n" ); document.write( "2x+4y=1440.................1
\n" ); document.write( "x+y=660.....................2
\n" ); document.write( "...
\n" ); document.write( "multiply (2) by -2 and add to (1)
\n" ); document.write( "-2x-2y=-1320
\n" ); document.write( "add to (1) we get
\n" ); document.write( "4y-2y=1440-1320
\n" ); document.write( "2y=120
\n" ); document.write( "y= $60 cost of silver ring.
\n" ); document.write( "....
\n" ); document.write( "m.ananth@hotmail.ca
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