At the beginning of the six-month period, 60 units of product 1 are in inventory.

■ During the next six months, at most 175 units of product 2 can be sold on a cash basis, and at most 250 units of product 2 can be sold on a credit basis.

It costs $45 to produce each unit of product 2, and each sells for $52.50. A credit sale of a unit of product 2 yields $1.00 less profit than a cash sale.

Four hours of production time are needed to produce each unit of product