What is 15 Percent of 20?
15% of 20 = 3
- Result
- 3
- Remaining
- 17
- 15% as decimal
- 0.15
- 20 + 15%
- 23
Sumwise · Maintained by Theo Abbott (pen name) · automated checks · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How the checks work
How to work it out
- Turn the percentage into a decimal: 15 ÷ 100 = 0.15
- Multiply: 0.15 × 20 = 3
- Check: Work backwards: 3 ÷ 20 × 100 = 15%.
Another method. As a proportion of part to whole: 15/100 = part/20, so part = 15 × 20 ÷ 100 = 3. Both methods always give the same answer.
In a spreadsheet: =15%*20. Forgetting to divide the percentage by 100 makes the answer 100 times too big. Note that x% of y always equals y% of x.
What the result means
3 is the 15% share of 20. The remaining 85% is 17, and the two parts add back up to 20.
Discounts: 15% off an item priced $20 saves $3, so you pay $17.
Adding and taking away 15%
Increasing 20 by 15% gives 23 and decreasing it by 15% gives 17. These do not cancel out: raising 20 by 15% and then lowering the result by 15% ends at 19.55, because the second 15% is taken of a bigger number.
Related results
| 5% of 20 | 5% of 20 = 1 |
| 10% of 20 | 10% of 20 = 2 |
| 20% of 20 | 20% of 20 = 4 |
| 25% of 20 | 25% of 20 = 5 |
| 50% of 20 | 50% of 20 = 10 |
| 75% of 20 | 75% of 20 = 15 |
The other way round: 20% of 15. 15% of 20 and 20% of 15 are always equal (both are 15 × 20 ÷ 100 = 3), so you can swap the numbers when one order is easier to work out in your head.
Practice
| 3% of 61 | Show answer3% of 61 = 1.83 |
| 83% of 84 | Show answer83% of 84 = 69.72 |
| 10% of 7 | Show answer10% of 7 = 0.7 |
| 73% of 2 | Show answer73% of 2 = 1.46 |
| 69% of 47 | Show answer69% of 47 = 32.43 |
| 79% of 88 | Show answer79% of 88 = 69.52 |
How answers are calculated and checked: methodology.
Questions
What is 15 Percent of 20?
15% of 20 is 3. Formula, steps and practice examples.
What is 15% off 20?
17. Taking 15% off leaves 85% of 20.
What is 20 plus 15%?
23. Adding 15% is the same as multiplying by 1.15.