A smartphone originally costs \$800. It is on sale for \$680. Calculate the percent discount.

• A. $20\%$
• B. $120\%$
• C. $17.6\%$
• D. $15\%$

Answer: (D)

Verified step by step guidance

1. Identify the original price and the sale price. Here, the original price is \$800 and the sale price is \$680.
2. Calculate the amount of discount by subtracting the sale price from the original price: \(\text{Discount} = 800 - 680\).
3. To find the percent discount, use the formula: \(\text{Percent Discount} = \left( \frac{\text{Discount}}{\text{Original Price}} \right) \times 100\).
4. Substitute the values into the formula: \(\text{Percent Discount} = \left( \frac{800 - 680}{800} \right) \times 100\).
5. Simplify the fraction and multiply by 100 to express the discount as a percentage.