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Part $1$

A coal mine cost and is estimated to hold tons of coal. There is no residual value. During the first year of$$ operations, tons are extracted and sold. Calculate depletion per unit.$($Round your answer to the nearest$$ cent.$)$

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Part $1$

A$.$$ $4\mathrm{.}63$

B$.$$ $9\mathrm{.}26$

C$.$$ $13\mathrm{.}89$

D$.$$ $18\mathrm{.}52$