document.write( "Question 149706: I tried to find an equation with the the unknown amount of coins but could not find one. I believe I need 3 seperate equations but I am not sure.
\n" ); document.write( ".05N+.10D=5.65
\n" ); document.write( ".05N+2 + .10D*2
\n" ); document.write( "(Not sure if this one is right. don't know the third one but I am pretty sure there is one Please help) \r
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\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? \n" ); document.write( "
Algebra.Com's Answer #109822 by stanbon(75887)\"\" \"About 
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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?\r
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\n" ); document.write( "Value EQUATION: 5N + 10D = 565
\n" ); document.write( "Value EQUAT: 5(N+8) + 10(2D) = 1045
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\n" ); document.write( "Rearrange:
\n" ); document.write( "5N + 10D = 565
\n" ); document.write( "5N + 20D = 1045 - 80
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\n" ); document.write( "Subtract 1st from 2nd to get:
\n" ); document.write( "10D = 400
\n" ); document.write( "D = 40 (# of dimes)
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\n" ); document.write( "Substitute to solve for N:
\n" ); document.write( "5N + 400 = 565
\n" ); document.write( "5N = 165
\n" ); document.write( "N = 33 (# of nickels)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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