30 is 75% of 40. Divide 30 by 40 and multiply by 100: 30 ÷ 40 = 0.75, and 0.75 × 100 = 75%.
How to work out what percent 30 is of 40
Percent = (X ÷ Y) × 100
- Write it as a fraction: 30/40 (simplifies to 3/4).
- Divide: 30 ÷ 40 = 0.75.
- Multiply by 100: 0.75 × 100 = 75%.
Check: 75% of 40 = 75 × 40 ÷ 100 = 30.
Nearby values
| 25 is what % of 40 | 62.5% |
| 26 is what % of 40 | 65% |
| 27 is what % of 40 | 67.5% |
| 28 is what % of 40 | 70% |
| 29 is what % of 40 | 72.5% |
| 30 is what % of 40 | 75% |
| 31 is what % of 40 | 77.5% |
| 32 is what % of 40 | 80% |
| 33 is what % of 40 | 82.5% |
| 34 is what % of 40 | 85% |
| 35 is what % of 40 | 87.5% |
| 10% of 40 | 4 |
| 20% of 40 | 8 |
| 25% of 40 | 10 |
| 50% of 40 | 20 |
| 75% of 40 | 30 |
Practising percentages? Free printable percentage worksheets with answer keys.