document.write( "Question 944600: Every evening Jenna empties her pockets. And puts her change in a jar at the end of the week she counts her money. One week she had 40 coins all dimes and quarters. When she added them up she had a total of 7.75. How many dimes where there
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Algebra.Com's Answer #575941 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! One week she had 40 coins all dimes and quarters. When she added them up she had a total of 7.75. How many dimes were there? \n" ); document.write( "------------------------ \n" ); document.write( "Equations: \n" ); document.write( "d + q = 40 coins \n" ); document.write( "10d + 25q = 775 cents \n" ); document.write( "---------------------- \n" ); document.write( "Modify for elimination:: \n" ); document.write( "5d + 5q = 200 \n" ); document.write( "2d + 5q = 155 \n" ); document.write( "---------- \n" ); document.write( "Subtract and solve for \"d\":: \n" ); document.write( "3d = 45 \n" ); document.write( "d = 15 (# of dimes) \n" ); document.write( "----------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "--------------- \n" ); document.write( "------- \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |