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)![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " |