Producing a unit of the product takes .6 hour on operation I plus .8 hour on operation
II. Over production of either the semifinished product (operation I) or the finished
product (operation II) in any month is allowed for use in a later month.The corresponding holding costs are $.20 and $.40 per unit per month.The production cost varies
by operation and by month. For operation 1, the unit production cost is $10, $12, and
$11 for June,July, and August. For operation 2, the corresponding unit production cost
is $15, $18, and $16. Determine the optimal production schedule for the two operations
over the 3-month horizon.