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10
20% × 50 = 10
10 is what % of 50?
20%
10 ÷ 50 × 100
50 is what % of 10?
500%
50 ÷ 10 × 100
Discount (20% off)
40
You save 10
Tip (20%)
10
Total with tip: 60
Tax (20%)
10
Total with tax: 60
20% of 50 is 10. To calculate, multiply 50 by 20 and divide by 100: 50 × 20 ÷ 100 = 10.
To calculate 20% of 50: convert 20% to a decimal (0.2), then multiply by 50. So 0.2 × 50 = 10.
20% off 50 means you save 10, so the discounted price is 40. This is common when calculating sale prices or discounts.
A 20% tip on a 50 bill is 10, making your total 60.