SOLUTION: A developer bought 900 acres of land for 680,000$. Some was bought at 600$ per acre, some for 800$ per acre and some for 1000$ per acre. How much of each did her buy if he bought t

Question 1103055: A developer bought 900 acres of land for 680,000$. Some was bought at 600$ per acre, some for 800$ per acre and some for 1000$ per acre. How much of each did her buy if he bought twice as many acres at 600$ as he did at 1000$?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
A-amount of $600/acre land
B-amount of $800/acre land
C-amount of $1000/acre land
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1.
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2.
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3.
Substituting eq. 3 into eqs. 1 and 2,

4.
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5.
Multiply eq. 4 by 4 and subtract from eq. 5,

Now work backwards, use the equations and solve for B and A.

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