Advanced Percentage Applications Worksheets Grade 10

1. A pharmaceutical company is testing a new medication. The drug's effectiveness decreases by 15% each hour in the bloodstream. If a patient takes a 200 mg dose, what percentage of the original dose remains active after 4 hours? Round your answer to the nearest whole percent.
2. Charlotte is a real estate agent who earns a 4.5% commission on the first $150,000 of a home's sale price and a 2.75% commission on any amount above $150,000. She sells a home for $385,000. What is her total commission from this sale?
3. Emma owns a boutique clothing store. She purchases a designer dress from a supplier for $240. She applies a 45% markup to set the initial selling price. During a clearance event, she offers a 30% discount on the marked-up price. After the event, she sells the remaining dresses at a final price that is 20% lower than the clearance price. What is the final price a customer pays for the dress?

…and 5 more problems

1. Olivia is planning a fundraising event for her school's music program. She purchases 120 custom T-shirts from a supplier at a cost of $15 each. The supplier offers a 10% discount on the total cost for bulk orders. After receiving the shirts, Olivia decides to sell them at a 40% markup on the original cost per shirt (before the discount) to raise funds. However, due to low demand, she reduces the selling price by 25% during a flash sale. What is the final selling price of one T-shirt after the flash sale?
2. Tane is a car salesperson at a dealership in Auckland. He earns a base salary of $2,400 per month plus a 7.5% commission on the total value of cars he sells. Last month, Tane sold three cars: a hatchback for $28,000, a sedan for $35,500, and an SUV for $52,000. How much did Tane earn in total last month?
3. A laptop originally priced at $1200 is on sale for 25% off. If the sales tax is 8%, what is the final price?

…and 5 more problems

1. A smartphone manufacturer finds that 15% of phones produced have a minor defect. If they implement a new quality control system that reduces defects by 40%, and they produce 2,500 phones per day, how many defective phones will they now produce daily?
2. A principal of $2000 is invested at 8% annual interest compounded quarterly for 5 years. What is the final amount? (A = P(1 + r/n)^(nt))
3. Emma is a real estate agent who earns a commission of 3% on the first $150,000 of a house's selling price and 1.5% on the remaining amount. She sells a house for $375,000. How much total commission does Emma earn?

…and 6 more problems