Three products are processed through three different operations. The times (in minutes) required per unit of each product, the daily capacity of the operations (in minutes per day) and the profit per unit sold of each product (in Saudi Riyals)) are as follows: Time ber unit (minutes) Operation Formulate the LP model. Then treat each of the following items independently. Show how each restriction can be implemented in the formulation. a. The entire capacity of operation 3 must be used. b. The sum of the unused capacities of all three operations must not exceed 10 minutes per day. c. A market study indicates that the ratio of the number of units of product 1 to the number of units of products 2 and 3 must be at least equal to 0.4. d. The storage volume is 1000m3 and the volumes for the three products are 2,1 , and 3m3 respectively