document.write( "Question 320222: A pile of 40 coins consists of nickels and dimes. The total value of coins is $3.35. Find the number of nickels and the number of dimes. (Let x= the number of nickels and y= the number of dimes) \n" ); document.write( "
Algebra.Com's Answer #229367 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! X+Y=40 OR X=40-Y \n" ); document.write( ".05X+.10Y=3.35 \n" ); document.write( ".05(40-Y)+.10Y=3.35 \n" ); document.write( "2-.05Y+10Y=3.35 \n" ); document.write( ".05Y=3.35-2 \n" ); document.write( ".05Y=1.35 \n" ); document.write( "Y=1.35/.05 \n" ); document.write( "Y=27 DIMES. \n" ); document.write( "X=40-27 \n" ); document.write( "X=13 NICKELS. \n" ); document.write( "PROOF: \n" ); document.write( ".05*13+.10*27=3.35 \n" ); document.write( ".65+2.70=3.35 \n" ); document.write( "3.35=3.35 \n" ); document.write( " \n" ); document.write( " |