Question $3)$ A chemical plant producing phenol is reported to require $2000Ib$ benzol, $2000$

Ib sulphuric acid, $3400Ib$ caustic soda, $4000Ib$ steam, $80kWh$ electricity and $40$ employee

hours of labor per ton of phenol. What are the direct production costs per ton of product?

Estimate the total product cost using average values from table $27$ for other costs and compare

this with the current price of ethanol.