Calculate the total chlorine consumption (kg/year) required to produce each grade 0T CPVC. Let equal the fraction of the 300day year in which 67% CI CPVC is produced and (1) the fraction in which 70% CI CPVC is produced. Derive an expression for the gross annual prot [ ( ) sales revenue raw material cost manufacturing cost], assuming that all CPVC produced can be sold. Then determine the optimal value of (the value that maximizes) and the corresponding percentage increase in over the prot attained if only 67% CI CPVC is produced