Camille Keegan sells lamps for $105.55 that cost her $75.00. Camille's percent of markup based on the selling price is:

The mark up percentage M, in decimal form, is gross profit P divided by cost C.

M = P/ C
M * 100 will change the decimal to a percentage.

To calculate Camille's percent of markup based on the selling price, we can use the following formula:

Percent of Markup = ((Selling Price - Cost) / Cost) x 100

Given:

Selling Price = $105.55
Cost = $75.00

Substituting the values in the formula:

Percent of Markup = (($105.55 - $75.00) / $75.00) x 100

Calculating:

Percent of Markup = ($30.55 / $75.00) x 100

Percent of Markup ≈ 40.73%

Therefore, Camille's percent of markup based on the selling price is approximately 40.73%.

To calculate Camille's percent of markup based on the selling price, you need to find the difference between the selling price and the cost, and then divide it by the selling price. Finally, multiply the result by 100 to get the percentage.

1. Subtract the cost from the selling price: $105.55 - $75.00 = $30.55

2. Divide the difference by the selling price: $30.55 / $105.55 = 0.2893

3. Multiply the result by 100 to get the percentage: 0.2893 * 100 = 28.93%

Therefore, Camille's percent of markup based on the selling price is approximately 28.93%.