What is 75% of 120?
75% of 120 is 90. Adding it gives 210; taking it off gives 30.
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The numbers for these inputs
| Percent | Of the number | Number plus it | Number minus it |
|---|---|---|---|
| 5% | 6 | 126 | 114 |
| 10% | 12 | 132 | 108 |
| 15% | 18 | 138 | 102 |
| 20% | 24 | 144 | 96 |
| 25% | 30 | 150 | 90 |
| 30% | 36 | 156 | 84 |
| 40% | 48 | 168 | 72 |
| 50% | 60 | 180 | 60 |
How it works
A percent is a part of 100, so X percent of a number is the number x X / 100. For 15 percent of 80: 80 x 15 / 100 = 12.
To add a percent (a price rise, a tip, a tax), multiply by 1 + X/100. To take it off (a discount), multiply by 1 - X/100.
The table shows the same number at common percentages so you can compare at a glance.
Common mistakes
- Adding a percent and then taking the same percent off: +20% then -20% does not return to the start, it leaves you 4% lower.
- Mixing up percent and percentage points: going from 10% to 12% is 2 points, but a 20% increase.
- Taking a percent of the wrong base, for example a discount of the final price instead of the original.
Questions
What is 75 percent of 120?
90. It is 120 x 75 / 100.
What is 120 plus 75 percent?
210.
What is 120 minus 75 percent?
30, for example a 75% discount on a price of 120.
90 is what percent of 120?
75%. Divide the part by the whole and multiply by 100.