20 increased by 5% = 21
20 increased by 5 percent is 21. Step-by-step solution with the formula and worked example.
20 increased by 5% = 21
increased by %
Solution: 20 increased by 5 percent
Increase = 5% × 20 = 1
Result = 20 + 1 = 21
Result = 20 + 1 = 21
Step-by-step explanation
- Find the increase: 5% of 20 = 1.
- Add it to the original: 20 + 1 = 21.
- Shortcut: multiply by (1 + 5/100) = ×1.05.
Good to know
Shortcut: increasing by 5% is the same as multiplying by 1.05 (that is 100% + 5%). So 20 × 1.05 = 21 in a single step — handy for adding tax, interest or a markup.
Frequently asked questions
20 increased by 5 percent
20 increased by 5% = 21.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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