Pre-Algebra
Name___________________________
Percent Study Guide
Period____________Date___________
1.) A storeowner received a shipment of 500 bags of candy. He noticed that 150 of the bags were
open. What percentage of the bags was open?
2.) Larry buys a sweater that has a regular price of $40. The sweater is on sale for 30% off. What is
the sale price of the sweater?
3.) Scott’s month income is $3500. Scott spends 12% of his month income on groceries. How
much does Scott spend on groceries each month?
4.) What percent of 20 is 12?
5.) Identify two values that are equal.
a.) Find 20% of 120.
b.) What is 30% of 80?
c.) 24 is 25% of what number?
6.) A stereo, originally priced at $360, is on sale for $200. What is the percent of change?
7.) Your bill at a restaurant comes to $17.25. You decide to leave a 15% tip. How much money
should you leave for the tip?
8.) Lee invested $1000 at a rate of 3%. How long would it take to earn $60 in interest?
9.) At a restaurant, your bill came to $24.99. You have decided to leave a 15% tip. How much
should you will you pay altogether?
10.) Ellen had 3 years to invest her money at 5%. She earns $300 in interest. How much money did
she originally invest?
11.) Kelly invested $1000 into a CD that has an interest rate of 6%. She is going to invest the money
for two years. How much interest will she earn?
12.) Tickets cost $7 at the door. If purchased in advance, the tickets cost $5. What is the percent of
discount for purchasing tickets in advance?
13.) A TV is cost $420. It is on sale for 15% and will be taxed at a rate of 6%. What will be the total
cost of the TV?
14.) A car decreases in value by 15% each year. If the car originally cost $12,500, how much would it
cost a year after buying it?
15.) Dan’s coach recorded that he had bowled 250 points in a bowling tournament. However, the
official scoreboard showed that Darwin actually bowled 225 points. What was the percent
error?
16.) A store owner wants to make 42% profit on everything in his store. If the owner buys an item
for $36, how much will the customer pay for that particular item?