Lindstrom Company produces two fountain pen models. Information about its products follows: Sales revenue Less: Variable costs Contribution margin Total units sold Product A Product B $75,000 $125,000 33,000 38,000 $42,000 $ 87,000 5,000 5,000 Lindstrom's fixed costs total $78,500. Required: 1. Determine Lindstrom's weighted average unit contribution margin and weighted average contribution margin ratio. 2. Calculate Lindstrom's break-even point in units and in sales revenue. 3. Calculate the number of units that Lindstrom must sell to earn a $150,000 profit 4. Calculate Lindstrom's margin of safety and margin of safety as a percentage of sales if it sells 8,000 total pens