The capacity of a new phthalic anhydride plant is 8 000 kg/h. The total capital investment for the plant is $ 300 million. The working capital is 5% of the fixed capital investment (FCI). The FCI will be depreciated linearly over 10 years. The salvage value can be assumed to be zero. The fixed operating cost is estimated to be 3% of the FCI. The variable cost amounts to $ 800/ton product. The plant operates for 90% of the year. The tax rate is 35%. Estimate the selling price (in $/ton) the would give an after-tax ROI of 20%.