document.write( "Question 99107: There are 850 Douglas fir and ponderosa pine trees in a section of forest bought by Sawz Logging Co. The company paid an average 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( "How many Douglas firs?\r
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\n" ); document.write( "\n" ); document.write( "How many Ponderosa Pine?
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Algebra.Com's Answer #72133 by checkley71(8403)\"\" \"About 
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D+P=850 OR D=850-P
\n" ); document.write( "300D+225P=217500 NOW REPLACE D BY (850-P)
\n" ); document.write( "300(850-P)+225P=217500
\n" ); document.write( "255000-300P+225P=217500
\n" ); document.write( "-75P=217500-255000
\n" ); document.write( "-75P=-37500
\n" ); document.write( "P=-37500/-75
\n" ); document.write( "P=500 NUMBER OF PONDEROSA PINETREES SOLD.
\n" ); document.write( "D+500=850
\n" ); document.write( "D=850-500
\n" ); document.write( "D=350 NUMBER OF DOUGLAS TREES SOLD.
\n" ); document.write( "PROOF
\n" ); document.write( "300*350+500*225=217500
\n" ); document.write( "105000+112500=217500
\n" ); document.write( "217500=217500
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