Dixie Candle Supply makes candles. The sales mix (as a percentage of total dollar sales) of its three product lines is birthday candles 30%, standard tapered candles 60%, and large scented candles 10%. The contribution margin ratio of each candle type is shown below. Candle Type Contribution Margin Ratio Birthday 20% Standard tapered 35% Large scented 50% (a) What is the weighted-average contribution margin ratio? Weighted-average contribution margin ratio Enter weighted-average contribution margin in percentages %