a limitation of 1,550 machine-hours per week prevents golden leaf manufacturing company from meeting the sales demands for its products. the product information is as follows: r1 r2 r3 r4 unit selling price $450 $300 $175 $300 unit variable costs (300) (125) (100) (150) unit contribution margin $150 $175 $75 $150 machine-hours per unit 10 10 10 15 assuming demand for each product is as follows: r1 50 units; r2 80 units; r3 25 units; and r4 10 units, what is the best short-run profit maximizing strategy?