Sumwise

What is 20 Percent of 15?

20% of 15 = 3

Result
3
Remaining
12
20% as decimal
0.2
15 + 20%
18

Sumwise · Checked by Theo Abbott · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How we check it

How to work it out

  1. Turn the percentage into a decimal: 20 ÷ 100 = 0.2
  2. Multiply: 0.2 × 15 = 3
  3. Check: Work backwards: 3 ÷ 15 × 100 = 20%.

Another method. As a proportion of part to whole: 20/100 = part/15, so part = 20 × 15 ÷ 100 = 3. Both methods always give the same answer.

In a spreadsheet: =20%*15. 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 20% share of 15. The remaining 80% is 12, and the two parts add back up to 15.

Discounts: 20% off an item priced $15 saves $3, so you pay $12.

Adding and taking away 20%

Increasing 15 by 20% gives 18 and decreasing it by 20% gives 12. These do not cancel out: raising 15 by 20% and then lowering the result by 20% ends at 14.4, because the second 20% is taken of a bigger number.

Related results

Results for nearby numbers
5% of 15

5% of 15 = 0.75

10% of 15

10% of 15 = 1.5

15% of 15

15% of 15 = 2.25

25% of 15

25% of 15 = 3.75

50% of 15

50% of 15 = 7.5

75% of 15

75% of 15 = 11.25

The other way round: 15% of 20

Practice

4% of 99
Show answer

4% of 99 = 3.96

83% of 9
Show answer

83% of 9 = 7.47

48% of 37
Show answer

48% of 37 = 17.76

59% of 26
Show answer

59% of 26 = 15.34

9% of 76
Show answer

9% of 76 = 6.84

20% of 27
Show answer

20% of 27 = 5.4

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 20 Percent of 15?

20% of 15 is 3. Formula, steps and practice examples.

What is 20% off 15?

12. Taking 20% off leaves 80% of 15.

What is 15 plus 20%?

18. Adding 20% is the same as multiplying by 1.2.