Zayn.Co. manufacture 3 products for which details are as follows:

	A	B	C
Selling price	$25	$20	$15
Materials	7	6	5
Labor (@ 75c per hr.)	9	6	3
Variable overheads Total direct cost	3 $19	3 $15	3 $11

Sales demand for the period is limited as follows:

Product A 4,000 units

Product B 6,000 units

Product C 6,000 units

The supply of labor is limited to 90,000 hours per period.

1) Calculate contribution per unit for X Ltd. Manufacture.

2) Calculate contribution per labor hours per unit.

3) Rank the products in relation to labor hour rate.

4) Draw up a production schedule showing how X Ltd. Manufacture would maximize profit in spite of the constraint.

(Please explain each step in layman terms)