document.write( "Question 404036: You have 28 coins that are all nickels and dimes. The value of the coins is $2.05 define variables and write a system of equations for this situation. Explain the steps necessary to solve the system in part (a) solve the system \n" ); document.write( "
Algebra.Com's Answer #285584 by stanbon(75887)\"\" \"About 
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You have 28 coins that are all nickels and dimes. The value of the coins is $2.05 define variables and write a system of equations for this situation. Explain the steps necessary to solve the system in part (a) solve the system
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\n" ); document.write( "Equations:
\n" ); document.write( "Quantity:: n + d = 28
\n" ); document.write( "Value:::: 5n +10d = 205 cents
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\n" ); document.write( "Multiply thru the 1st equation by 5 to get:
\n" ); document.write( "5n + 5d = 5*28
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\n" ); document.write( "Subtract that from the Value Equation and solve for \"d\":
\n" ); document.write( "5d = 205-5*28
\n" ); document.write( "5d = 35
\n" ); document.write( "d = 7 (# of dimes)
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\n" ); document.write( "Solve for \"n\":
\n" ); document.write( "n + d = 28
\n" ); document.write( "n + 7 = 28
\n" ); document.write( "n = 21 (# of nickels)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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