Key Concepts
- Translating real-world scenarios into percentage-based mathematical expressions.
- Identifying the base value in problems (e.g., population, cost, revenue).
- Breaking down complex percentage problems into sequential steps.
Skills Covered
- Apply percentage concepts to solve practical problems (e.g., discounts, sales, population growth).
- Solve problems involving layered relationships (e.g., A is X% of B, and B is Y% of C).
Example Problems
- If a store increases a product price by 25% and then gives a 20% discount, what is the final price?
- A city’s population increased by 15% from 20,000 in 2015 to 23,000 in 2016. What was the population in 2015?
- A factory produces 1,200 items daily, and 30% of them are defective. How many items are defective?