The price of bread has increased from R12 to R18

Calculate the percentage

increase in the price of bread.

The formula to calculate percentage increase is:

percentage increase = (new value - old value) / old value x 100

Applying this formula to the given values:

percentage increase = (18 - 12) / 12 x 100
percentage increase = 6 / 12 x 100
percentage increase = 0.5 x 100
percentage increase = 50%

Therefore, the percentage increase in the price of bread is 50%.

To calculate the percentage increase, you can use the following formula:

Percentage Increase = (New Value - Old Value) / Old Value * 100

In this case, the old value is R12 and the new value is R18:

Percentage Increase = (18 - 12) / 12 * 100

Let's calculate it step-by-step:

Step 1: Calculate the difference between the new and old values
Difference = 18 - 12 = 6

Step 2: Get the ratio of the difference to the old value
Ratio = Difference / Old value = 6 / 12 = 0.5

Step 3: Multiply the ratio by 100 to get the percentage
Percentage Increase = Ratio * 100 = 0.5 * 100 = 50

Therefore, the percentage increase in the price of bread is 50%.