A grocery store reduced the price of a loaf of bread from $3.80 to $3.67. Find the percent change (discount rate). Round to the nearest tenth of a percent.
discount rate = change divided by original price:
(3.80-3.67)/3.80 = 0.0342 = 3.4%
A grocery store reduced the price of a loaf of bread from $3.20 to
$3.09. Find the percent change (discount rate). Round to the nearest tenth of a percent.
To find the percent change (discount rate), you need to calculate the difference between the original price and the new price, divide it by the original price, and then multiply by 100.
Step 1: Calculate the difference between the original price and the new price:
Difference = Original price - New price
Difference = $3.80 - $3.67
Difference = $0.13
Step 2: Divide the difference by the original price:
Ratio = Difference / Original price
Ratio = $0.13 / $3.80
Ratio ≈ 0.0342
Step 3: Multiply the ratio by 100 to get the percentage:
Percentage = Ratio * 100
Percentage ≈ 0.0342 * 100
Percentage ≈ 3.42%
Therefore, the percent change (discount rate) for the loaf of bread is approximately 3.42%.