A smartphone originally costs \$800 but is now sold for \$680. Calculate the percent discount.

• A. Percent discount = $15\%$
• B. Percent discount = $0.15\%$
• C. Percent discount = $0.18\%$
• D. Percent discount = $17.6\%$

Answer: (A)

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: \$800 - \$680$.
3. To find the percent discount, use the formula: \(\text{Percent Discount} = \left( \frac{\text{Discount Amount}}{\text{Original Price}} \right) \times 100\).
4. Substitute the values into the formula: \(\left( \frac{800 - 680}{800} \right) \times 100\).
5. Simplify the fraction and multiply by 100 to express the discount as a percentage.