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3
15% × 20 = 3
3 is what % of 20?
15%
3 ÷ 20 × 100
20 is what % of 3?
667%
20 ÷ 3 × 100
Discount (15% off)
17
You save 3
Tip (15%)
3
Total with tip: 23
Tax (15%)
3
Total with tax: 23
15% of 20 is 3. To calculate, multiply 20 by 15 and divide by 100: 20 × 15 ÷ 100 = 3.
To calculate 15% of 20: convert 15% to a decimal (0.15), then multiply by 20. So 0.15 × 20 = 3.
15% off 20 means you save 3, so the discounted price is 17. This is common when calculating sale prices or discounts.
A 15% tip on a 20 bill is 3, making your total 23.