Cullumber sells television sets and Blu$-$ray DVD players. The business is divided into two divisions along product lines. A variable cos Calculate the company's weighted$-$average contribution margin ratio. $($Round answer to $2$ decimal places, e$.$g$.15\mathrm{.}25\%.)$

Weighted$-$average contribution margin ratio

income statement for a recent quarter's activity is presented below:

$($a$)$

Determine the percentage of sales and the contribution margin for each division.