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22 September, 06:51

A student government organization is selling Christmas trees as a fundraiser. On Friday, they sold 5 noble fir trees and 3 douglas fir trees for a total of $420. On Saturday, 12 noble fir trees and 9 douglas fir trees were sold for a total of $1,080. What is the cost per tree for each type?

how much is 1 douglas?

how much is 1 noble fir?

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  1. 22 September, 06:58
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    You have to do a system, lets say x are noble fir trees and y are douglas fir trees,

    5x+3y=420

    12x+9y=1080

    if you solve this you get,

    x=60 and

    y=40

    SO Noble fir trees cost $60 and Douglas fir trees cost $40.
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