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4 Depletion A firm expects to produce 60,000 tons of gravel annually for 5 years. The deposit costs $150K to acquire. The annual gross revenue is expected to be $9 per ton, and the net revenue is expected to be $5 per ton Compute the annual depletion on the cost basis; The economy is going through a high inflation period, now you have to consider both the price and cost increases in the 5-year project period. Assuming that the unit production cost is increasing by 10% every year, compute the new annual depletion on the percentage basis