Question 87618: there are 850 douglas fir and ponderosa pine trees in a section of the forest brought by sawz logging company. the company paid an average of $300 for each douglas pine and $250 for each ponderosa pine. if the company paid $217,500 for the tress how many of each kind did the company buy?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! there are 850 douglas fir and ponderosa pine trees in a section of the forest brought by sawz logging company. the company paid an average of $300 for each douglas pine and $250 for each ponderosa pine. if the company paid $217,500 for the tress how many of each kind did the company buy?
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Let the number of douglas fir be "x"; value of these is 300x dollars
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Number of pines is "850-x" ; value of thes is 250(850-x) = 212500-250x dollars
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EQUATION:
value + value = 217,500
300x + 212500-250x = 217,500
50x = 5000
x = 100 (# of douglas fir)
850-x=750 (# of pine)
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Cheers,
Stan H.
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