Concord 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 55%, and large scented candles 15%. The contribution margin ratio of each candle type is shown below. Candle Type Contribution Margin Ratio Birthday 20% Standard tapered 30% Large scented 50% Part 1 What is the weighted average contribution margin ratio? % Weighted-average contribution margin ratio