Brownies and More sell all types of cookies and pastries. On Tuesdays, they markdown all brownies 75% to a sale price of $1.50 a dozen. Find the regular selling price and the markdown of a dozen brownies.

1.50=.25*regularprice

regular price=6.00

markdown=.75*6=4.50

To find the regular selling price and the markdown of a dozen brownies, we'll need to use some basic math.

First, let's start by finding the original price of a dozen brownies before the markdown. We know that the sale price after the markdown is $1.50, which means it is 75% off the regular price.

To find the original price, we can set up the following equation:

Original Price * (1 - Markdown) = Sale Price

Let's represent the original price of a dozen brownies as "P". Since the markdown is 75%, we can write it as 0.75 in decimal format. The sale price is $1.50.

P * (1 - 0.75) = $1.50

Simplifying the equation:

P * 0.25 = $1.50

Now, let's solve for P by dividing both sides of the equation by 0.25:

P = $1.50 / 0.25

P = $6

Therefore, the regular selling price of a dozen brownies is $6.

To find the markdown, we can subtract the sale price from the regular price:

Regular Price - Sale Price = Markdown

$6 - $1.50 = $4.50

Therefore, the markdown of a dozen brownies is $4.50.