Worksheet 7.6B
For each problem, show the proportion you used to find the answer.
1. A boxed set of 5 CDs costing $60 is marked 15% off. Find the sale price of the CDs.
2. A holiday decoration has a wholesale price of $3. The percent markup is 150%. What is the retail price?
3. Your food bill at a restaurant is $24. You leave a 20% tip. The sales tax is 6%. What is the total cost of the meal?
4. A lamp costs $25.75. The sales tax is 4%. What is the total cost?
5. The wholesale price of a pair of jeans is $15. A store marks up the price by 75%. When the jeans don’t sell, the store offers a 20% discount. What is the sale price of the jeans?
6. A store is having an end of season sale and offers a discount of 40% on all coats. One week later the store discounts the coats an additional 60%. Is the store giving away the coats for free? Explain your reasoning.
7. You order a pizza to be delivered. The bill comes to $12.60. you give the delivery person $15 and tell them to keep the change. What percent tip did you give? Round to the nearest percent.
8. A DVD has a regular price of $26 and is on sale for $16.90. What is the percent discount?
I = Simple Interest ($dollar amount)
P = Principal (amount your borrow or deposit)
r = annual interest rate (percent written as a decimal)
t = time (in years)
Show the equation you used to calculate your answer.
9. You put $874 in a savings account for 2 years at an annual interest rate of 1.5%. How much simple interest will you earn?
10. You take out a car loan for $17,000. If the interest rate is 9.75%, how much interest will you pay on a three year loan?
11. You put $400 in a savings account. After 5 years, you have $424 in the account. What interest rate were you getting?