document.write( "Question 17294: Agirl has a collection of dimes and nickles worth four dollars. If she has 60 coins,how many of each kind are there? I don't know how to set up an algebraic equation! please show me the equation. \n" ); document.write( "
Algebra.Com's Answer #8609 by LilSkittleMd(119)![]() ![]() ![]() You can put this solution on YOUR website! There are 2 equations in this problem. \n" ); document.write( "Let d= dimes \n" ); document.write( "Let n= nickels \n" ); document.write( "d+n=60 \n" ); document.write( "0.1d+0.05n=4 \n" ); document.write( "Use substitution to solve \n" ); document.write( "n=60-d \n" ); document.write( "0.1d+0.05(60-d)=4 \n" ); document.write( "0.1d+3-0.05d=4 \n" ); document.write( "0.05d=1 \n" ); document.write( "d=20 \n" ); document.write( "Now substitute d into one of the original equations \n" ); document.write( "20+n=60 \n" ); document.write( "n=40 \n" ); document.write( "The girl has 20 dimes and 40 nickels \n" ); document.write( " |