Step-by-step arithmetic breakdown
To calculate 30% of 120, convert the percentage into a decimal by dividing by 100, then multiply by the whole amount:
1. Convert percentage to fraction: 30 / 100 = 0.3000
2. Multiply by base number: 0.3000 × 120
3. Exact result: 36
Everyday real-world applications
- Retail & Discounts: If a product priced at $120 is discounted by 30%, your savings equal $36.
- Tax & Tips: A 30% service tip on a $120 restaurant bill equals exactly $36.
- Financial Yields: An investment yielding 30% on a principal of $120 produces $36 in interest.