There are 850 Douglas fir and Ponderosa pine trees in a section of forest bought by Karamazov 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?

Respuesta :

225 x 4 = 900
217,500 - (900 x 5) = 213,000
213,000 / 300 = 710

710 Fir trees, 20 Pine trees. Hope this helped :)