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If it takes 40 pounds of fertilizer to treat a lawn of 7000 ft.² how many pounds of fertilizer are needed to treat a lawn of 13,000 ft.²

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Answer:

Step-by-step explanation: Set it up as a fraction 40/7000=x/13000.

Cross multiply to get 7000x=40(13000). Getting 7000x=520,000.

Divide both sides by 7000 to get x by itself getting x=74.285 pounds of fertilizer.

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