document.write( "Question 143289: Sorry, but i need help with this one also. Thank you in advance.\r
\n" ); document.write( "\n" ); document.write( "Joe has a collection of nickels and dimes that is worth $5.65. If the number of dimes were doubled and the number of nickels were increased by 8, the value of the coins would be $10.45. How many dimes does he have?
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Algebra.Com's Answer #104269 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Joe has a collection of nickels and dimes that is worth $5.65.
\n" ); document.write( "5n + 10d = 565 cents
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\n" ); document.write( "If the number of dimes were doubled and the number of nickels were increased by 8, the value of the coins would be $10.45.
\n" ); document.write( "5(n+8) + 10(2d) = 1045 cents
\n" ); document.write( "5n+40 + 20d = 1045
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\n" ); document.write( "How many dimes does he have?
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\n" ); document.write( "EQUATIONS:
\n" ); document.write( "5n + 10d = 565
\n" ); document.write( "5n + 20d = 1005
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\n" ); document.write( "10d = 440
\n" ); document.write( "d = 44 (# of dimes)
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\n" ); document.write( "Substitute into 5n+10d = 565 to solve for \"n\":
\n" ); document.write( "5n +440 = 565
\n" ); document.write( "5n = 125
\n" ); document.write( "n = 25 (# of nickels)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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