3 (Sales mixed) Rene Company manufactures and sells three products. Relevant per unit data concerning each product are given below. Product A B C Percent of total sales 50% 30% 20% 50% Contribution margin ratio 20% 50% Income tax ratio 25% fixed costs of $175,000 per year. Instructions: 1. Calculate the weighted average contribution margin of the total sales 2. Compute the Dollar amount of break-even point sales. 3. Compute the sales level in dollars make profit ratio 15%