the manager of a store orders gold necklaces that cost $10 and sells them for $20. what is the mark - up, as…

the manager of a store orders gold necklaces that cost $10 and sells them for $20. what is the mark - up, as a percentage? write your answer using a percent sign (%).
Answer
Explanation:
Step1: Find the mark - up amount
Mark - up amount = Selling price - Cost price. So, $20 - 10=10$.
Step2: Calculate the mark - up percentage
Mark - up percentage = $\frac{\text{Mark - up amount}}{\text{Cost price}}\times100%$. Substitute the values: $\frac{10}{10}\times100% = 100%$.
Answer:
100%