As the manager of Speedy Supermarket, answer the following questions. $($Round dollars to the nearest cent and percents to the nearest tenth of a percent.$)$

An advertisement has two $2$ liter bottles and a $12$ pack of "Bubbly$-$Cola".

The top says "Speedy Supermarket."

Moving down are the $2$ liter bottles. Text around them is as follows.

Sale

$4/$$$5$

$2$ Liter Bubbly$-$Cola Products

Below the bottles is the $12$ pack. Text around it is as follows.

Sale $$13/3$

$12$ Pack Bubbly$-$Cola Products

$($a$)$

If $2$ liter Bubbly$-$Cola products cost Speedy $$15\mathrm{.}30$ per case of $24$ bottles, what is the amount of the markup $($in $$)$ and what is the percent markup on selling price per case?

amount of the markup $

$14\mathrm{.}70$

Correct: Your answer is correct.

percent markup on selling price

$\%$

$($b$)$

If $12$ pack Bubbly$-$Cola products have a markup of $$8\mathrm{.}35$ per case of six $12$ packs at Speedy, what are the cost $($in $$)$ and the percent markup on selling price per case?

cost $

percent markup on selling price

$\%$