Proportionality and Percents

Tickets to Taylor Swift concert changed from $250 per ticket to $180 per ticket. The percent change of the cost of concert tickets ​ (a)   by ​ (b)   .

• decreased

• 28%

• increased

• 39%

• 70%

The ratio of red Air Jordans to black Air Jordans at the local Foot Locker is 4:3.

There are 52 pairs of red Air Jordans in stock. How many pairs of black Air Jordans does Foot Locker have in stock?

• 27

• 32

• 36

• 39

The ratio of blue to yellow to green gumballs in a gumball machine is 4:3:1. There are 24 yellow gumballs in the machine.

Complete the sentences about the gumballs. Choose the correct answer from each dropdown menu to complete the sentences.

There are ​ (a)   blue gumballs. The machine contains a total of ​ (b)   gumballs.

• 32

• 64

• 8

• 24

• 16

• 40

A roll of wire holds 3 meters of wire. About how many inches of wire does the roll hold if 1 inch = 2.54 centimeters?

(1 meter = 100 centimeters) Round to a whole number.

• 76 inches

• 92 inches

• 88 inches

• 118 inches

What is 20% of 65?

• 13

• 15

• 16

• 13.75

18 IS 45% OF WHAT NUMBER?

• 90

• 45

• 40

• 20

Sarah earns $20 a day working after school. She spent 30% of her daily earnings on Monday. How much money did she spend on Monday?

• $1.40

• $6

• $0.60

• $14

200 children attended the school play. Of the total attendance, 40% were boys. How many girls attended the school play?

• 60

• 180

• 80

• 120

I bought a coat and it was $76 and I had a 35% off coupon. What percent did I pay after using the coupon?

• 35%

• 75%

• 41%

• 65%

The movie theater has 250 seats. 225 seats were sold for the current showing. What percent of seats are empty?

• 10%

• 20%

• 80%

• 90%