document.write( "Question 1017781: A jar has only nickles and dimes. There are three times as many nickles as dimes and a total of $25. How many of each coin are in the jar? \n" ); document.write( "
Algebra.Com's Answer #633994 by addingup(3677)![]() ![]() You can put this solution on YOUR website! n = 3d \n" ); document.write( "0.05n+0.10d = 25 substitute for n \n" ); document.write( "0.05(3d)+0.10d = 25 \n" ); document.write( "0.15d+0.10d = 25 \n" ); document.write( "0.25d = 25 \n" ); document.write( "d = 100 \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "n/3 = d \n" ); document.write( "0.05n+0.10d = 25 substitute for d: \n" ); document.write( "0.05n+0.10(n/3) = 25 \n" ); document.write( "0.15n+0.10n = 75 \n" ); document.write( "0.25n = 75 \n" ); document.write( "n = 300 \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "Check: \n" ); document.write( "d = 100*0.10 = 10 \n" ); document.write( "n = 300*0.05 = 15 \n" ); document.write( "___________--------- \n" ); document.write( "Total. . . . . 25 We have the correct answer \n" ); document.write( " |