Q 6.40: Anders Interiors produces lamps with a selling price of $150 and a contribution margin ratio of 30%. Variable costs include cost of goods sold and sales commissions. Next year, cost of goods sold will be $80 per unit, and sales commissions will be 4% of sales. There will be no change in unit selling price. Calculate the new contribution margin ratio. A 53% 57% 43% 47%