document.write( "Question 997320: I am having trouble figuring my math problem out. The problem is \"Molly has $5.45 in coins. She has two more nickels than dimes. She has nine fewer quarters than dimes. How many of each coin does she have?\" \n" ); document.write( "

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\n" ); document.write( "I am having trouble figuring my math problem out. The problem is \"Molly has $5.45 in coins. She has two more nickels than dimes. She has nine fewer quarters than dimes. How many of each coin does she have?\"
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Let number of dimes be D
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document.write( "Then number of nickels = D + 2
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document.write( "Number of quarters = D - 9
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document.write( "We then get the value equation: .1D + .05(D + 2) + .25(D - 9) = 5.45
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document.write( ".1D + .05D + .1 + .25D - 2.25 = 5.45
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document.write( ".1D + .05D + .25D + .1 - 2.25 = 5.45
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document.write( ".4D - 2.15 = 5.45
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document.write( ".4D = 5.45 + 2.15
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document.write( ".4D = 7.6
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document.write( "D, or number of dimes = , or 
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document.write( "Number of nickels: 19 + 2, or 
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document.write( "Number of quarters: = 19 - 9, or  \n" );
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