Review For Percent Test
Name:Period:
Date:Unit 4
Formulas to know:
1. Percent Increase or Decrease2. Percent Error
3. Simple InterestInfo to know:
I = p r t1. Discounts are off the total
p = principal, the loan amount2. Mark up is on to the total
r = rate in %3. Tax and Tip are on to the total
t- time in years
Practice:
1. Alli estimates that her school auditorium has 600 seats. IT actually has 657 seats. What is the percent error in her estimation to the nearest tenth of a percent?
2. Sue earned a 5% commission on all of her sales in March. Her total sales were $30,000 in March. How much money did she earn from commissions?
3. Joe went shopping for a new watch. He found a watch that was originally priced at $60.00 on sale for $40.00. What is the percent increase to the nearest whole percent?
4. Mr. Smith borrows $5500 from his bank to buy a used car. The loan has a 5.5% simple interest rate. If it takes Mr. Smithtwo years to pay back the loan, how much will he be paying back in total?
5. Appliances at Lowes are on sale for 20% off the original price. Ethan has a coupon for an16% discount on the sale price. If the original price of a microwave oven is $500, how much will Ethan pay for the oven, before tax?
6. Nike sneakers are sold at two different stores. At The Sneaker Outlet, the cost is $75.00 but they are on sale for 15% off. At The Sneaker Barn, the cost is $90.00 but they are on sale for 25% off. Which store has the less expensive sneakers?
7. A bike costs $160 now, but its price will go up by 20%. What will the new price be after the increase?
8. Rachel is a travel agent. She receives a 4% commission on vacation package sales.
a.) How much will Rachel make if she sells $5600 in vacation packages?
b.)Rachel receives an additional 2% bonus on the sale of vacation packages during February. What would be her combined commission and bonus if she sells $5600 in vacation packages during February?
9. The sales team at an electronics store sold 68 computers last month. The manager at the store wants to encourage the sales team to sell more computers and is going to give all the sales team members a bonus if the number of computers sold increases by 30% in the next month. How many computers must the sales team sell to receive the bonus? Justify your answer.