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What is 18% of 20?
18% of 20 = 3.6
20 × 18/100 = 3.6

How to calculate 18% of 20

Multiply 20 by 18 and divide by 100: 20 × 18 ÷ 100 = 3.6. Equivalent shortcut: 20 × 0.18 = 3.6.

As a discount

A 18% discount on a 20 purchase saves you 3.6, so you pay 16.4. Stacking more discounts? Use the Discount & Tax Calculator — stacked discounts multiply, they don't add.

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