What is 5% of 400?

5% of 400 = 20

How to work it out

1. Convert the percentage to a decimal: 5 ÷ 100 = 0.05
2. Multiply by the number: 0.05 × 400 = 20

400 increased by 5% is 420; decreased by 5% it is 380 (useful for discounts).

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