Percents Unit

Last week, Keyra spent $105 at the grocery store. This week, she spent $126 at the grocery store. By what percentage did the cost of her grocery bill change?

• An increase of 17%

• An increase of 20%

• A decrease of 17%

• A decrease of 20%

The table to the left shows the different color cars employees at a car dealership drive. What percent of employees drive a silver car?

• 45%

• 50%

• 40%

• 35%

Tabitha sold 27 boxes of cookies the first day of her orchestra fundraiser. This represents 18% of the total boxes she sold. How many boxes did she sell total for the fundraiser?

• 175 boxes

• 185 boxes

• 160 boxes

• 150 boxes

Alonso's hourly pay from the past 4 years is shown in the table below. What was the percent increase from year 1 to year 4?

• 40%

• 35%

• 45%

• 32%

Daniel has dinner at a restaurant and the cost of his meal is $28.00. Because of the service, he wants to leave a 20% tip. What is his total bill including tip?

• 33.60

• 40.00

• 24.60

• 30.50

How much would the tip be if you left 18% on a $75.45 steak dinner?

• $ 13.58

• $ 89.03

• $ 61.87

• $135.80

Mathematical Equivalence

ON

Brennan wants to purchase a new rug to go in the nursery. The rug costs $56, but she has a coupon for 15% off. How much will the rug cost if she uses the coupon?

• $47.60

• $50.00

• $45.00

• $55.00

A recipe calls for 14.0 grams of butter. If there is a 15% error on the weight, what is the range of acceptable weight?

• 11.9 – 14.0 grams

• 11.9 – 16.1 grams

• 14.0 – 16.1 grams

• 12.5 – 15.5 grams

Erika put $10,400 in a savings account that earns 3% annual simple interest. Assuming she makes no additional deposits or withdrawals, how much interest will Erika earn after 4 years?

• $1,248

• $3,120

• $11,648

• $1,700