document.write( "Question 588029: Heather has $2.50 in nickels, dimes and quarters. She has three times as many nickels as dimes and four times as many quarters as dimes.
\n" ); document.write( "a. Write an equation that relates the number of each kind of coin to the amount of money that Heather has.
\n" ); document.write( "b. How many of each kind of coin does heather have?
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Algebra.Com's Answer #374366 by ankor@dixie-net.com(22740)\"\" \"About 
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Heather has $2.50 in nickels, dimes and quarters.
\n" ); document.write( " She has three times as many nickels as dimes and four times as many quarters as dimes.
\n" ); document.write( "a. Write an equation that relates the number of each kind of coin to the amount of money that Heather has.
\n" ); document.write( ":
\n" ); document.write( "The total value equation
\n" ); document.write( ".05n + .10d + .25q = 2.50
\n" ); document.write( "\"three times as many nickels as dimes\"
\n" ); document.write( "n = 3d
\n" ); document.write( "\"four times as many quarters as dimes.\"
\n" ); document.write( "q = 4d
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\n" ); document.write( ":
\n" ); document.write( "b. How many of each kind of coin does heather have?
\n" ); document.write( ":
\n" ); document.write( ".05n + .10d + .25q = 2.50
\n" ); document.write( "replace n and q using the above equations
\n" ); document.write( ".05(3d) + .10d + .25(4d) = 2.50
\n" ); document.write( ".15d + .10d + 1.00d = 2.50
\n" ); document.write( "1.25d = 2.50
\n" ); document.write( "d = 2.50/1.25
\n" ); document.write( "d = 2 dimes
\n" ); document.write( "then
\n" ); document.write( "n = 3(2)
\n" ); document.write( "n = 6 nickels
\n" ); document.write( "and
\n" ); document.write( "q = 4(2)
\n" ); document.write( "q = 8 quarters
\n" ); document.write( ":
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\n" ); document.write( "Check these solution in the value equation
\n" ); document.write( ".05(6) - .10(2) + .25(8) =
\n" ); document.write( ".30 = .20 + 2.00 = 2.50
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