Decimal
0.2 × 75 = 15
Fraction
⅕ of 75 = 15
Equation
(20 ÷ 100) × 75 = 15
How to calculate 20% of 75
Two steps — convert to a decimal, then multiply.
- 1
Convert the percentage to a decimal
20 ÷ 100 = 0.2
- 2
Multiply the original number by the decimal
0.2 × 75 = 15
Where 20% of 75 comes up in practice
A 20% tip on a $75 restaurant bill comes out to $15.00, bringing the total to $90.00.
How to read this number
- 20% is the modern US standard tip for good service — $15.00 on a $75.00 bill brings the total to $90.00.
Mental math shortcut
⅕ — divide by 5. Or take 10% and double it.
The same calculation, expressed three ways
Knowing one of these gives you the other two — handy when a problem is phrased differently to what you typed.
- 15 is 20% of 75
- 15 out of 75 = 20%
- 20% off $75.00 = $60.00
Frequently asked
Common follow-up questions for 20% of 75.
Yes — multiplying by the decimal form (0.2) is exactly what "20% of 75" means. 75 × 0.2 = 15.
20% equals ⅕. So ⅕ of 75 = 15, which is the same answer reached the long way.
No — 20% of $75 is the discount amount itself ($15.00). 20% off $75 means the sale price is $60.00 (the original price minus the discount).
⅕ — divide by 5. Or take 10% and double it. For 20% of 75 that gives 15 directly.
The number is 75. To work it out, divide 15 by 0.2: 15 ÷ 0.2 = 75.
Total = $90.00. The bill ($75) plus a 20% tip ($15.00) = $90.00.
Need a different calculation?
Use the full Percentage Calculator — five modes including reverse calculations, percentage change, and percentage difference.
Open Percentage Calculator