The john equipment company estimates its carrying cost at 15% and its ordering cost at $90 per order. The estimated annual requirement is 78,000 units at a price of $4 per unit. Required: (i). What is...

The john equipment company estimates its carrying cost at 15% and its ordering cost at $90 per order. The estimated annual requirement is 78,000 units at a price of $4 per unit.

Required:

(i). What is the most economical no. of units to order?

(ii). No. of orders to be placed in a year.

(iii). About how often will an order need to be placed?