30 increased by 40% = 42
30 increased by 40 percent is 42. Step-by-step solution with the formula and worked example.
30 increased by 40% = 42
increased by %
Solution: 30 increased by 40 percent
Increase = 40% × 30 = 12
Result = 30 + 12 = 42
Result = 30 + 12 = 42
Step-by-step explanation
- Find the increase: 40% of 30 = 12.
- Add it to the original: 30 + 12 = 42.
- Shortcut: multiply by (1 + 40/100) = ×1.4.
Good to know
Shortcut: increasing by 40% is the same as multiplying by 1.4 (that is 100% + 40%). So 30 × 1.4 = 42 in a single step — handy for adding tax, interest or a markup.
Frequently asked questions
30 increased by 40 percent
30 increased by 40% = 42.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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