document.write( "Question 208712: Two pounds of pears and one pound of peaches cost $1.40. 3 pounds of pears and two pounds of peaches cost $2.40. How much is the combined cost of one pound of pears and one pound of peaches? \n" ); document.write( "
Algebra.Com's Answer #157906 by ankor@dixie-net.com(22740)\"\" \"About 
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Two pounds of pears and one pound of peaches cost $1.40. 3 pounds of pears
\n" ); document.write( " and two pounds of peaches cost $2.40.
\n" ); document.write( "How much is the combined cost of one pound of pears and one pound of peaches?
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\n" ); document.write( "Let x = no. of lbs of pears
\n" ); document.write( "Let y = no. of lbs of peaches
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\n" ); document.write( "2x + 1y = 1.40
\n" ); document.write( "y = 1.40 - 2x; this form for substitution
\n" ); document.write( "3x + 2y = 2.40
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\n" ); document.write( "Substitute (1.4-2x) for y in the above equation
\n" ); document.write( "3x + 2(1.4-2x) = 2.40
\n" ); document.write( "3x + 2.8 - 4x = 2.4
\n" ); document.write( "3x - 4x = 2.4 - 2.8
\n" ); document.write( "-x = -.4
\n" ); document.write( "x = .40 a lb; pears
\n" ); document.write( "then
\n" ); document.write( "y = 1.4 - 2(.40)
\n" ); document.write( "y = 1.4 - .8
\n" ); document.write( "y = .60 a lb; peaches
\n" ); document.write( ":
\n" ); document.write( "A pound of each, pear and peach: .40 + .60 = $1.00 \n" ); document.write( "
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