document.write( "Question 313793: Julie sells 3 ducks and 4 chickens for $70.30. One chicken and one duck together are sold for $20.70. What is the price of a chicken? \n" ); document.write( "
Algebra.Com's Answer #224430 by ankor@dixie-net.com(22740)\"\" \"About 
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Julie sells 3 ducks and 4 chickens for $70.30.
\n" ); document.write( "3d + 4c = 70.30
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\n" ); document.write( " One chicken and one duck together are sold for $20.70.
\n" ); document.write( "d + c = 20.70
\n" ); document.write( "d = (20.70-c)
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\n" ); document.write( "What is the price of a chicken?
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\n" ); document.write( "Replace d with (20.7-c) in the 1st equation
\n" ); document.write( "3(20.7-c) + 4c = 70.30
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\n" ); document.write( "62.10 - 3c + 4c = 70.30
\n" ); document.write( "c = 70.30 - 62.10
\n" ); document.write( "c = $8.20 price of a chicken
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\n" ); document.write( "Check, find the price of duck
\n" ); document.write( "20.70 - 8.20 = 12.50
\n" ); document.write( "3(12.50) + 4(8.20) = 70.30; confirms our solution of c = 8.2\r
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