document.write( "Question 1016034: Jack has 14 coins in dimes and quarters. The total value of the coins is $2.60. How many of each coin does Jack have.
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Algebra.Com's Answer #632411 by addingup(3677) You can put this solution on YOUR website! d+q= 14 therefore d= 14-q We'll use this value for d next \n" ); document.write( "0.10d+0.25q= 2.60 Substitute for d: \n" ); document.write( "0.10(14-q)+0.25q= 2.60 \n" ); document.write( "1.4-0.10q+0.25q = 2.60 \n" ); document.write( "0.15q = 1.20 \n" ); document.write( "q = 8 \n" ); document.write( "and: \n" ); document.write( "d = 14-8 = 6 \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "Check: \n" ); document.write( "0.25(8)+0.10(6) = 2.60 \n" ); document.write( "2+0.60 = 2.60 We have the correct answer \n" ); document.write( " |