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Billy is making compost. To create good compost quickly, the ingredient mixture should have a C:N ratio near 30:1 The table below shows the carbon and nitrogen percentages (by weight) of various common compostables.

After mixing a pound of coffee grounds and 6 pounds of rotten vegetables, how many pounds of dry leaves should he add to obtain a 30:1 C:N ratio? Express your answer rounded to the nearest pound.

 Oct 30, 2020
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Billy should add 4 pounds of dry leaves.

 Oct 30, 2020

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