Question

A store owner bought laptop computers for $350 and sold them for $826. What is the mark-up, as a percentage?

Write your answer using a percent sign (%).

Answer 1

To calculate the mark-up as a percentage, use the following formula:

\[
\text{Mark-up Percentage} = \left( \frac{\text{Selling Price} - \text{Cost Price}}{\text{Cost Price}} \right) \times 100
\]

In this case, the cost price is $350 and the selling price is $826.

1. Calculate the mark-up amount:
\[
\text{Mark-up Amount} = \text{Selling Price} - \text{Cost Price} = 826 - 350 = 476
\]

2. Now, plug the values into the formula:
\[
\text{Mark-up Percentage} = \left( \frac{476}{350} \right) \times 100
\]

3. Calculate the fraction:
\[
\frac{476}{350} \approx 1.36142857
\]

4. Multiply by 100 to find the percentage:
\[
\text{Mark-up Percentage} \approx 1.36142857 \times 100 \approx 136.14
\]

So, the mark-up percentage is approximately **136.14%**.