What is a Reverse Tip and Why Should You Care?
A reverse tip calculation lets you find the original bill amount before a tip was added. This is useful when you see a total amount with tip included and want to know the base cost of the meal or service.
How to Calculate a Reverse Tip
Here is the formula:
[\text{Original Bill} = \frac{\text{Final Bill}}{1 + \frac{\text{Tip Percentage}}{100}}]
Where:
- Original Bill is the bill amount before the tip.
- Final Bill is the total amount paid including the tip.
- Tip Percentage is the tip rate as a percentage.
Calculation Example
You paid $150 total and the tip was 10%.
Convert the tip rate:
[\frac{10}{100} = 0.10]
Add 1:
[\text{1} + 0.10 = 1.10]
Divide the final bill:
[\text{Original Bill} = \frac{150}{1.10} \approx 136.36]
The original bill before the tip was approximately $136.36, meaning the tip added $13.64.