3. XYZ food products Ltd. want to determine how many kg. of shrikhand to stock on daily basis. Historical data has generated the following pattern of demand

Units sold per day	180	181	182	183	184	185	186
No. of days	2	8	10	40	20	15	5

Assume that the stock levels are restricted to the range 180-186kgs. And that shrikland left unsold at the end of the day must be disposed of due to inadequate refrigeration facilities. Shrikland costs Sh.6 per kg to the company and it sells for Sh.8 per kg

1. Determine EVPI (3marks)