document.write( "Question 1084132: A box contains 74 coins, only dimes and nickels. The amount of money in the box is $4.70. How many dimes and how many nickels are in the box? \n" ); document.write( "
Algebra.Com's Answer #698191 by addingup(3677) You can put this solution on YOUR website! d+n =74 subtract d from both sides: \n" ); document.write( "n = 74-d \n" ); document.write( "0.10d+0.05n = 4.70 substitute for n: \n" ); document.write( "0.10d+0.05(74-d) = 4.70 \n" ); document.write( "0.10d+3.70-0.05d = 4.70 \n" ); document.write( "0.05d = 1 \n" ); document.write( "d = 20 \n" ); document.write( "n = 74-20 = 54 \n" ); document.write( " |