Reverse percentage calculator

The reverse percentage formula to determine original value, often denoted as X, from a specified percentage P% of that value is expressed as:

Reverse percentage, or Y is P% of what?, helps you figure out the original amount when you know a certain part of it. Think of it as a tool for working backward from partial information to uncover the complete picture. It is like solving a puzzle in everyday life, such as finding the regular price of something on sale or understanding how much tax you paid in a total bill. With our visual reverse percentage calculator, you can work backward from the percentage to find the whole amount. It is a handy math skill for making smart decisions and managing your finances.

Explore the world of reverse percentages through practical scenarios, mastering the Y is P% of what? concept to uncover original values in real-life situations.
Example 1: Interest Earned:

• You invest $5,000 in a savings account that offers a 3% annual interest rate. After a year, how much interest did you earn?

Example 2: Discount Calculation:

• You find a shirt on sale for $30, marked down by 25%. What was the original price of the shirt?

Example 3: Tax Calculation:

• You purchase an item for $150, and the sales tax is 8%. What was the price of the item before tax?

Questions:
1. 72 miles is 18% of what ?
2. 150 feet is 20% of what ?
3. 24 gallons is 8% of what?
4. 45 minutes is 15% of what?
5. 50 pounds is 10% of what?
Answer key:
[1- 400, 2- 750, 3- 300, 4- 300, 5- 500]