at the Mexico plant. The cost of shipping from the Philippines plant is $0.18 per unit, and the cost of shipping from the Mexico plant is $0.12 per unit. If the constraint is one, enter " 1 ". If the amount is zero, enter " 0 ". LetP1P2P3M1M2M3=numberofPT-100batterypacksproducedatthePhilippinesplant=numberofPT-200batterypacksproducedatthePhilippinesplant=numberofPT-300batterypacksproducedatthePhilippinesplant=numberofPT-100batterypacksproducedattheMexicoplant=numberofPT-200batterypacksproducedattheMexicoplant=numberofPT-300batterypacksproducedattheMexicoplant b) Solve the linear program developed in part (a) to determine the optimal production plan. If the amount is zero, enter "0". Total Cost =$ If required, round your answer to two decimal digits. At least \& / unit. If required, round your answer to two decimal digits. At least $ / unit