Question 198571
Let x=# of douglas fir trees and y=# of hemlock trees



Since "There are a total of 500 douglas fir and hemlock trees", this means that {{{x+y=500}}} (ie add up the two counts to get a total of 500)



Also, because "the company paid an average of $205 for each douglas fir and $300 for each hemlock." and "the company paid a total of $132,000 for the trees", this translates to the equation {{{205x+300y=132000}}}



So to find x and y, simply solve the system 



{{{system(x+y=500,205x+300y=132000)}}}