A mobile phone seller requests 85 mobile phones per month from the manufacturer. The cost of each order of the phone seller from the manufacturer is fixed, $ 40,000 , and the price paid for each phone is $120,000. Ordered phones come 5 times a day and stock is not allowed to run out. The holding cost averages $450 per stock unit per month. It is assumed that there are 30 days in a month.

According to this, find

a) Economic order quantity.

b)The monthly total cost

, c)The time between orders.

d)The highest level of inventory