Glover Company makes three products in a single facility. These products have the following unit product costs:

	Product
	A		B		C
Direct materials	$	35.00	$	51.50	$	57.90
Direct labor		22.40		25.00		15.80
Variable manufacturing overhead		2.20		1.60		1.50
Fixed manufacturing overhead		12.10		7.70		8.30
Unit product cost	$	71.70	$	85.80	$	83.50

Additional data concerning these products are listed below.

	Product
	A		B		C
Mixing minutes per unit		1.40		0.90		0.50
Selling price per unit	$	80.00	$	102.40	$	95.90
Variable selling cost per unit	$	2.80	$	3.30	$	3.10
Monthly demand in units		3,000		4,300		2,300

The mixing machines are potentially the constraint in the production facility. A total of 9,120 minutes are available per month on these machines.

Direct labor is a variable cost in this company.

Required:

a. How many minutes of mixing machine time would be required to satisfy demand for all three products?

b. How much of each product should be produced to maximize net operating income?

c. Up to how much should the company be willing to pay for one additional hour of mixing machine time if the company has made the best use of the existing mixing machine capacity?