What is 20% of 40?

20% of 40 = 8

How to work it out

1. Convert the percentage to a decimal: 20 ÷ 100 = 0.2
2. Multiply by the number: 0.2 × 40 = 8

40 increased by 20% is 48; decreased by 20% it is 32 (useful for discounts).

Calculate any percentage

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