A discount appliance store sells iPhones.The store purchases iPhones at a price of $95 per unit.The following information applies to this product.

Demand = 20 units/day

Order cost = $56/order

Annual holding cost = 25% of purchase price

Desired cycle-service level = 90% (z=1.28)

Lead time = 10 days

Standard deviation of daily demand = 4 units

Current on-hand inventory 220 units, with no open orders or back orders

The store operates 52 weeks per year, 6 days per week.It has a continuous inventory review system.

a)What is the EOQ?

b)What should R be?

c)An inventory withdrawal for 10 units was just made.Is it time to reorder?

d)The store currently uses a lot size of 500 units (that is, Q = 500).What is the annual holding cost of this policy?Annual ordering cost?

e)What is the annual cost saved by shifting from the 500-unit lot size to the EOQ?

Suppose that the discount appliance store uses a P system instead of a Q system.They order inventory every 12 days.

f)What should T be?

g)How much more safety stock (than with a Q system) is needed?

h)It is time for the periodic review.How much should be ordered?

STUDENT NOTE: I'm very sorry for so many questions but any and all help would be appreciated! There is no missing content too again any and all help would be great!