Step-by-step arithmetic breakdown
To calculate 90% of 25, convert the percentage into a decimal by dividing by 100, then multiply by the whole amount:
1. Convert percentage to fraction: 90 / 100 = 0.9000
2. Multiply by base number: 0.9000 × 25
3. Exact result: 22.5
Everyday real-world applications
- Retail & Discounts: If a product priced at $25 is discounted by 90%, your savings equal $22.5.
- Tax & Tips: A 90% service tip on a $25 restaurant bill equals exactly $22.5.
- Financial Yields: An investment yielding 90% on a principal of $25 produces $22.5 in interest.