Worked examples
Two examples
Example 1
A coat costs $80.00 and is 25% off. What is the sale price?
- The discount: 0.25 × 80 = 20.
- The sale price: 80 − 20 = 60. Or in one step: you pay 75%, and 0.75 × 80 = 60.
Answer: $60.00
Example 2
A pair of boots costs $120.00 and is 30% off. How much is the discount?
- 30% of 120: 0.3 × 120 = 36.
Answer: $36.00
Where this is taught: Ratio, Proportion, and Percent, “Discounts, and what you pay”
The drill
Ten problems
How many:
Type the amount only, like 12.50; the unit is already there. Then press Check my answers at the bottom.Write each answer on the line. The answer key, with the reasoning, is on the last page.