20 decreased by 25% = 15
20 decreased by 25 percent is 15. Step-by-step solution with the formula and worked example.
20 decreased by 25% = 15
decreased by %
Solution: 20 decreased by 25 percent
Decrease = 25% × 20 = 5
Result = 20 − 5 = 15
Result = 20 − 5 = 15
Step-by-step explanation
- Find the decrease: 25% of 20 = 5.
- Subtract it from the original: 20 − 5 = 15.
- Shortcut: multiply by (1 − 25/100) = ×0.75.
Good to know
Shortcut: decreasing by 25% is the same as multiplying by 0.75 (that is 100% − 25%). So 20 × 0.75 = 15 in one step.
Frequently asked questions
20 decreased by 25 percent
20 decreased by 25% = 15.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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