Carla Vista 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.

$\backslash$table$[[$Candle Type,Contribution Margin Ratio$],[$Birthday$,20\%$