please answer this with details

2. A hyper market plans to order vacuum cleaners from three different supplies equally that has an annual demand 4500 units. There is a fixed transportation cost of 700 SAR that is incurred each time the order is placed, along with the additional fixed cost of 150 SAR for each supplier. The hyper market incurs a holding cost of 15% while the cost of each model is purchased at 200 SAR. a. Evaluate the frequency and lot size that the hyper market manager must order for each model if he decides to aggregate the order. Also determine the cycle inventory, average flow time, and the annual ordering and holding costs per supplier b. Determine the lot size that the hyper market manager has to order when the supplies are aggregated per supply with a capacity of 900 units, frequency of supplies, with the cycle inventory, average flow time, and annual ordering and holding costs per supplier. c. Identify the strategy that the hyper market manager has to choose to adopt economics of scale