A company manufactures four components (L, M, N and P) which are

incorporated into different products. All the components are

manufactured using the same general purpose machinery. The following

production cost and machine hour data are available, together with the

purchase prices from an outside supplier.

Production cost:			L	N	M	P
			$	$	$	$
Direct material			12	18	15	8
Direct labour			25	15	10	8
Variable overhead			8	7	5	4
Fixed overhead			10	6	4	3
Total			55	46	34	23
Purchase price from outside supplier			57	55	54	50
			Hours	Hours	Hours	Hours
Machine hours per unit			3	5	4	6

Manufacturing requirements show a need for 1,500 units of each component per week. The maximum number of general purpose machinery hours available per week is 24,000

What number of units should be purchased from the outside supplier?