Step-by-step arithmetic breakdown
To calculate 80% of 20, convert the percentage into a decimal by dividing by 100, then multiply by the whole amount:
1. Convert percentage to fraction: 80 / 100 = 0.8000
2. Multiply by base number: 0.8000 × 20
3. Exact result: 16
Everyday real-world applications
- Retail & Discounts: If a product priced at $20 is discounted by 80%, your savings equal $16.
- Tax & Tips: A 80% service tip on a $20 restaurant bill equals exactly $16.
- Financial Yields: An investment yielding 80% on a principal of $20 produces $16 in interest.