A local bakery is planning the expansion of its bread-making capacity for the next 5 months.

9500

It can increase its current capacity by installing ovens of three different sizes. Each has a one-time

purchase cost and a monthly usage cost as given below, and only one oven of each size is available.

Note that an oven can be purchased in any month but once an oven is purchased, the monthly usage

cost is incurred regardless of the extent to which the oven is in use.

Formulate and solve an IP that determines when (and which) an oven must be bought, if the intention

is to minimize cost.