"Rolfe Inc. sells 4 products, A, B, C, and D in a mix of 9:2 respectively. The sales prices, respectively, are $13, $19, $8 and $12. Product A has...

"Rolfe Inc. sells 4 products, A, B, C, and D in a mix of 9:7:6:2 respectively. The sales prices, respectively, are $13, $19, $8 and $12. Product A has variable costs of $10 and product B of $14. The contribution margin percentage for C is 25% and for D 75%. Fixed costs total $320,000. In the coming year Rolfe wants to make a profit of $222,000 after tax. The tax rate is 40%.1. Determine the units of each product which must be sold to achieve the required income after tax.