document.write( "Question 661837: A coin bank contains only nickels and dimes. The bank contains 46 coins. If 5 dimes and 2 nickels were removed, the total value of the coins would be $3.40. Find the number of each type of coin in the bank.
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Algebra.Com's Answer #411973 by ReadingBoosters(3246)\"\" \"About 
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x = dimes
\n" ); document.write( "y = nickels
\n" ); document.write( "x+y=46
\n" ); document.write( "3.40=(.1x+.05y)-(.1(5)) - (.05(2))
\n" ); document.write( "3.40 = .1x + .05y - .6
\n" ); document.write( "4 = .1x + .05y
\n" ); document.write( "given x = 46 - y
\n" ); document.write( "substitute into the equation
\n" ); document.write( "4 = .1(46-y) + .05y
\n" ); document.write( "distribute the .1
\n" ); document.write( "4 = 4.6 - .1y + .05y
\n" ); document.write( "4 = 4.6 - .05y
\n" ); document.write( ".05y = 4.6 - 4
\n" ); document.write( ".05y = .6
\n" ); document.write( "y = 12 nickels
\n" ); document.write( "x = 46 - 12 = 34 dimes
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