Niagara Chemical Company produces three products using three different continuous processes. The products are Yarex, Darol, and Norex. Projected sales in litres for the three products for the years 20x2 and 20x3 are as follows:

20x2 20x3

Yarex ........................................................................................................................120,000 130,000

Darol ........................................................................................................................80,000 70,000

Norex .......................................................................................................................50,000 60,000