BE19-9 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 50%, and large scented candles 20%. The contribution margin ratio of each candle type is shown below. Candle Type Birthday Standard tapered Large scented Contribution Margin Ratio 20% 30% 45% (a) What is the weighted average contribution margin ratio? (b) If the company's fixed costs are $450,000 per year, what is the dollar amount of each type of candle that must be sold to break even