Step-by-step arithmetic breakdown
To calculate 50% of 40, convert the percentage into a decimal by dividing by 100, then multiply by the whole amount:
1. Convert percentage to fraction: 50 / 100 = 0.5000
2. Multiply by base number: 0.5000 × 40
3. Exact result: 20
Everyday real-world applications
- Retail & Discounts: If a product priced at $40 is discounted by 50%, your savings equal $20.
- Tax & Tips: A 50% service tip on a $40 restaurant bill equals exactly $20.
- Financial Yields: An investment yielding 50% on a principal of $40 produces $20 in interest.