20 decreased by 40% = 12
20 decreased by 40 percent is 12. Step-by-step solution with the formula and worked example.
20 decreased by 40% = 12
decreased by %
Solution: 20 decreased by 40 percent
Decrease = 40% × 20 = 8
Result = 20 − 8 = 12
Result = 20 − 8 = 12
Step-by-step explanation
- Find the decrease: 40% of 20 = 8.
- Subtract it from the original: 20 − 8 = 12.
- Shortcut: multiply by (1 − 40/100) = ×0.6.
Good to know
Shortcut: decreasing by 40% is the same as multiplying by 0.6 (that is 100% − 40%). So 20 × 0.6 = 12 in one step.
Frequently asked questions
20 decreased by 40 percent
20 decreased by 40% = 12.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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