document.write( "Question 395538: Diana has been saving nickels and dimes. She opened up her piggy bank and determined that it contained 48 coins worth $4.50. Determine how many nickels and dimes were in the piggy bank. \n" ); document.write( "
Algebra.Com's Answer #280700 by mananth(16946)\"\" \"About 
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Diana has been saving nickels and dimes. She opened up her piggy bank and determined that it contained 48 coins worth $4.50. Determine how many nickels and dimes were in the piggy bank. \r
\n" ); document.write( "\n" ); document.write( "...
\n" ); document.write( "nickels -----x
\n" ); document.write( "dimes -------y
\n" ); document.write( "x+y = 48........................1
\n" ); document.write( "..
\n" ); document.write( "5x+10y=450......................2
\n" ); document.write( "multiply (1) by -5
\n" ); document.write( "-5x-5y=-240
\n" ); document.write( "add this to (2)
\n" ); document.write( "5y=210
\n" ); document.write( "/5
\n" ); document.write( "y=42 dimes
\n" ); document.write( "..
\n" ); document.write( "48-42= 6 nickels
\n" ); document.write( "...
\n" ); document.write( "m.ananth@hotmail.ca
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