dustin co. makes three products, a, b and c. they have a constrained resource - machine hours. there are only 16,913 machine hours available a month. the three products have the following data: abc selling price per unit6.0016.0011.00 variable cost per unit2.004.006.00 machine hours required245 demand for product in units 1,1834,0611,006 how much of product b should be produced?