Crane Company invests $6.01 miltion in a mine that is estimated to have 8 million tonnes of ore and a $250000 residual value. In the first year, 23400 tonnes are extracted but only 7700 tonnes are sold. How much is the depletion amount per tonne? $1.28 per tonne $0.75 per tonne $0.38 per tonne 50.72 per tonne