Sheridan 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.

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