4. Nanook Corporation's most recent income ment is given below. Sales (9.000 units) $184 500 Loss variable expenses 181.000) Contribution margin 103.500 Less fixed expenses 160.000) Operating income 543.500 Required: Show your work! (15 points) Compute contribution margin per unit b. If sales are doubled total variable costs will count c. If sales are doubled totul fixed costs will cqual 4. r 20 more units are sold, profits will increase by e. Compute how many units must be sold to break even f Compute how many units must be sold to achieve operating income of $60,000 Compute margin of safety in dollars and in percentage. Nanook wants to increase its margin of safety percentage to 45%. Will a 10% increase in sales price help Nanook achieve that desired percentage