The price of a notebook has dropped to $3.30 today. Yesterday’s price was $3.80. Find the percentage decrease. Round your answer to the nearest 10th of a percent.
To find the percentage decrease, you subtract the new price from the old price, divide by the old price, and then multiply by 100 to convert to a percentage.
Here's how the calculation works:
1. Find the difference in price: $3.80 (yesterday's price) - $3.30 (today's price) = $0.50
2. Divide the difference by the original price: $0.50 / $3.80 = 0.131578947
3. Convert the decimal to a percentage: 0.131578947 x 100% = 13.1578947%
Rounded to the nearest 10th of a percent, the percentage decrease is 13.2%.