document.write( "Question 85227: There are 850 Douglas fir and ponderosa pine trees in a section of forest bought by Saws Logigng Co. The company paid an avarage of $300 for each Douglas fir and $225 for each ponderosa pine. If the company paid $217,500 for the trees, how many of each kind did the company buy? \n" ); document.write( "

Algebra.Com's Answer #61431 by Lacey020991(49) $\"\"$ $\"About$

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x = douglas firs
\n" ); document.write( "y = ponderosa pine trees
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\n" ); document.write( "x + y = 850
\n" ); document.write( "300x + 225y = 217,500
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\n" ); document.write( "Solve by eliminating the y's
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\n" ); document.write( "1) Multiply the top equation by -225
\n" ); document.write( "-225x + -225y = -191,250
\n" ); document.write( "300x + 225y = 217,500
\n" ); document.write( "-------------------------
\n" ); document.write( "Your y's will cancel when you add everything
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\n" ); document.write( "75x = 26,250
\n" ); document.write( "x = 350
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\n" ); document.write( "2) plug your x-value back into the top equation
\n" ); document.write( "350 + y = 850
\n" ); document.write( "y = 500
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\n" ); document.write( "You end up with 350 douglass firs and 500 ponderosa pine trees.
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\n" ); document.write( "If you need further explanation, just let me know. \n" ); document.write( "

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