1. A laptop originally costs $1,200. During a sale, it's reduced by 15%. What is the sale price?

2. Sarah earns $850 per week. She saves 3/8 of her income and spends 2/5 on rent. How much money does she have left for other expenses?

3. A recipe serves 6 people and calls for 2¾ cups of flour. How much flour is needed to serve 14 people?

4. In a school of 1,350 students, 68% participate in sports. Of those who play sports, 5/12 play rugby. How many students play rugby?

5. A shop increases prices by 20%, then offers a 20% discount. Is the final price the same as the original? Explain your reasoning with calculations.

6. Two investment accounts both start with $5,000. Account A grows by 12% annually, while Account B grows by 1% monthly (compounded). Which account has more money after one year? Show your calculations.

7. A tank is 7/12 full of water. After using 40% of the water currently in the tank, how full is the tank now? Express your answer as both a fraction and a percentage.

8. Create a word problem that requires finding 3/7 of 84% of a number. Your problem should have a real-world context and the final answer should be 180.

9. A population of bacteria increases by 25% every 3 hours. If there are initially 800 bacteria, what fraction of the final population after 12 hours consists of the original bacteria?