One of Margaret$$s favorite things in the whole world is her grandma$$s banana bread. Margaret has become so obsessed with this

bread that she$$s using her grandma$$s recipe and making it for her friends. She and her friends have tweaked the recipe so that they can

make delicious banana chocolate chip muffins and banana squares, too. They$$ve turned this into a side business, selling their items to

local convenience stores.

There$$s one problem: the baked goods are best when well$-$ripened bananas are used. They$$re often available at a reduced price. But

when they$$re not, Margaret has to buy green bananas at full price and wait for them ripen.

Here are the typical costs and selling prices for each product.

Bread

$($per loaf$)$

Muffin

$($per dozen$)$

Squares

$($per dozen$)$

Selling price $$3\mathrm{.}70$ $$4\mathrm{.}90$ $$3\mathrm{.}60$

Variable costs $2\mathrm{.}102\mathrm{.}401\mathrm{.}50$