300 increased by 30% = 390
300 increased by 30 percent is 390. Step-by-step solution with the formula and worked example.
300 increased by 30% = 390
increased by %
Solution: 300 increased by 30 percent
Increase = 30% × 300 = 90
Result = 300 + 90 = 390
Result = 300 + 90 = 390
Step-by-step explanation
- Find the increase: 30% of 300 = 90.
- Add it to the original: 300 + 90 = 390.
- Shortcut: multiply by (1 + 30/100) = ×1.3.
Good to know
Shortcut: increasing by 30% is the same as multiplying by 1.3 (that is 100% + 30%). So 300 × 1.3 = 390 in a single step — handy for adding tax, interest or a markup.
Frequently asked questions
300 increased by 30 percent
300 increased by 30% = 390.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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