What is 42 Percent of 31?
42% of 31 = 13.02
- Result
- 13.02
- Remaining
- 17.98
- 42% as decimal
- 0.42
- 31 + 42%
- 44.02
Sumwise · Checked by Theo Abbott · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How we check it
How to work it out
- Turn the percentage into a decimal: 42 ÷ 100 = 0.42
- Multiply: 0.42 × 31 = 13.02
- Check: Work backwards: 13.02 ÷ 31 × 100 = 42%.
Another method. As a proportion of part to whole: 42/100 = part/31, so part = 42 × 31 ÷ 100 = 13.02. Both methods always give the same answer.
In a spreadsheet: =42%*31. 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
13.02 is the 42% share of 31. The remaining 58% is 17.98, and the two parts add back up to 31.
Discounts: 42% off an item priced $31 saves $13.02, so you pay $17.98.
Adding and taking away 42%
Increasing 31 by 42% gives 44.02 and decreasing it by 42% gives 17.98. These do not cancel out: raising 31 by 42% and then lowering the result by 42% ends at 25.5316, because the second 42% is taken of a bigger number.
Related results
| 5% of 31 | 5% of 31 = 1.55 |
| 10% of 31 | 10% of 31 = 3.1 |
| 15% of 31 | 15% of 31 = 4.65 |
| 20% of 31 | 20% of 31 = 6.2 |
| 25% of 31 | 25% of 31 = 7.75 |
| 50% of 31 | 50% of 31 = 15.5 |
| 75% of 31 | 75% of 31 = 23.25 |
The other way round: 31% of 42
Practice
| 8% of 99 | Show answer8% of 99 = 7.92 |
| 7% of 46 | Show answer7% of 46 = 3.22 |
| 17% of 74 | Show answer17% of 74 = 12.58 |
| 43% of 99 | Show answer43% of 99 = 42.57 |
| 30% of 93 | Show answer30% of 93 = 27.9 |
| 79% of 44 | Show answer79% of 44 = 34.76 |
How answers are calculated and checked: methodology.
Questions
What is 42 Percent of 31?
42% of 31 is 13.02. Formula, steps and practice examples.
What is 42% off 31?
17.98. Taking 42% off leaves 58% of 31.
What is 31 plus 42%?
44.02. Adding 42% is the same as multiplying by 1.42.