A local Barnes and Noble paid a $79.44 net price for each calculus textbook. The publisher offered a 20% trade discount. What was the publisher’s list price?

79.44/.8

To find the publisher's list price, we need to determine the net price after the trade discount was applied.

Step 1: Find the net price before the discount.
Let's assume the publisher's list price is x.
The net price before the discount can be calculated as:
Net price before discount = List price - (Trade discount * List price)
= x - (0.20 * x)
= x - 0.20x
= 0.80x

Step 2: Set up an equation using the given information.
We know that the net price after the discount is $79.44, so we can set up the equation:
0.80x = 79.44

Step 3: Solve the equation for x.
To solve for x, divide both sides of the equation by 0.80:
x = 79.44 / 0.80
x ≈ 99.3

Therefore, the publisher's list price is approximately $99.3.

To find the publisher's list price, we need to understand the concept of a trade discount and how it affects the net price.

The trade discount is a reduction in price offered by the publisher to the retailer (Barnes and Noble in this case). It is usually expressed as a percentage of the list price. The net price, on the other hand, is the final price that the retailer pays after deducting the trade discount.

In this question, we are given that Barnes and Noble paid a net price of $79.44 for each calculus textbook. We are also given that the trade discount offered by the publisher is 20%.

To find the list price, we can use the following formula:

List Price - (Trade Discount * List Price) = Net Price

Let's use this formula to find the list price:

List Price - (0.2 * List Price) = $79.44

Simplifying the equation:

List Price - 0.2 * List Price = $79.44

Combining like terms:

0.8 * List Price = $79.44

Dividing both sides of the equation by 0.8:

List Price = $79.44 / 0.8

Calculating the value:

List Price = $99.30

Therefore, the publisher's list price for each calculus textbook is $99.30.