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40 decreased by 5% = 38

40 decreased by 5 percent is 38. Step-by-step solution with the formula and worked example.

40 decreased by 5% = 38
decreased by %

Solution: 40 decreased by 5 percent

Decrease = 5% × 40 = 2
Result = 40 − 2 = 38

Step-by-step explanation

  1. Find the decrease: 5% of 40 = 2.
  2. Subtract it from the original: 40 − 2 = 38.
  3. Shortcut: multiply by (1 − 5/100) = ×0.95.

Good to know

Shortcut: decreasing by 5% is the same as multiplying by 0.95 (that is 100% − 5%). So 40 × 0.95 = 38 in one step.

Frequently asked questions

40 decreased by 5 percent
40 decreased by 5% = 38.

How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.

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