Please help me .. Please help me to answer all . I will upvote and support you . please

Question 5 Kable Bhd sells 15,625 units of product Z" a year. The company estimates storage costs for each product Z is RM1.80 per annum. Kable's current supplier charges RM55 for order processing charges per order regardless of size. This is a fixed cost. The cost of a unit of product Z from this supplier is RM16 each. Recently a new supplier has offered to supply Kable with product Z at a lower price of RM15.50 each. The new supplier charges a much higher fixed order processing charge of RM210. Due to a slightly different packaging, Kable estimates that storage costs for product Z could be reduced to RM1.75 a unit per annum. Required: a. Assuming Kable continues to use the existing supplier, calculate the following: i. the optimal order quantity for product Z; ii. the total cost of buying, ordering and keeping product Z for the year. b. Repeat part (a) assuming Kable changes to the new supplier