A smartphone originally costs \$800 but is now sold for \$680. Determine the percent decrease in price.

• A. Percent discount = 15%
• B. Percent discount = 0.15%
• C. Percent discount = 18%
• D. Percent discount = 17.6%

Answer: (A)

Verified step by step guidance

1. Identify the original price and the new price of the smartphone. Here, the original price is \$800 and the new price is \$680.
2. Calculate the amount of decrease in price by subtracting the new price from the original price: \(\text{Decrease} = 800 - 680\).
3. Use the formula for percent decrease: \(\text{Percent Decrease} = \left( \frac{\text{Decrease}}{\text{Original Price}} \right) \times 100\).
4. Substitute the values into the formula: \(\text{Percent Decrease} = \left( \frac{800 - 680}{800} \right) \times 100\).
5. Simplify the expression to find the percent decrease (do not calculate the final numeric value here, just set up the expression).