Proportional Relationships and Percentages

Today, everything at a store is on sale. The store offers a 20% discount.

If the regular price of an item is x dollars, what is the discount price in dollars?

• 0.8x

• x - 0.2x

• x-20

• 0.2x

Priya has a recipe for banana bread. She uses 7 1/2 cups of flour to make 3 loaves of banana bread. Andre will follow the same recipe. He will make b loaves of banana bread using f cups of flour. Which of these equations represents the relationship between b and f?

• b=2/9f

• b=2/5f

• b= 5/2f

• b=9/2f

Diego measured the length of a pen to be 22 cm. The actual length of the pen is 23 cm. Which of these is closest to the percent error for Diego’s measurement?

• 4.3%

• 4.5%

• 95.7%

• 104.5%

The circle graph represents the number of teenagers at a high school who play video games. If 1,938 students go to the school, about how many students do not play video games?

• 101 students

• 544 students

• 803 students

• 1,394 students

Today, everything at a store is on sale. The store offers a 20% discount.

The regular price of a T-shirt is $18. What is the discount price?

• $3.60

• $21.60

• $14.40

• $18.00

Today, everything at a store is on sale. The store offers a 20% discount.

The discount price of a hat is $18. What is the regular price?

• $3.60

• $14.40

• $22.50

• $32.40

Lin’s father is paying for a $20 meal. He has a 15%-off coupon for the meal. After the discount, a 7% sales tax is applied.

What does Lin’s father pay for the meal?

• $23.00

• $18.19

• $21.40

• $28.00

Tyler’s brother works in a shoe store.

Tyler’s brother earns a commission. He makes 2.5% of the amount he sells. Last week, he sold $900 worth of shoes. How much was his commission?

• $225.00

• $922.50

• $360.00

• $22.50

Tyler’s brother works in a shoe store.

The store bought a pair of shoes for $50, and sold it for $80. What percentage was the markup?

• 30%

• 60%

• 30

• 60

Tyler’s brother works in a shoe store.

Tyler’s brother earns $12 per hour. The store offers him a raise—a 5% increase per hour. After the raise, how much will Tyler’s brother make per hour?

• $.60

• $12.05

• $17.00

• $12.60