Percents, Statistics, & Proportions

On a map, ⅓ centimeters represents 5 kilometers. How many centimeters on this map represent 200 kilometers?

• ⅕
• 1⅔
• 13⅓
• 40

The two cubes shown below have diagonals EF and GH, respectively. The side lengths given are in feet. What is the ratio of the length of EF to the length of GH?

• 1:1
• 1:2
• 2:1
• 1:10

Desmond went to his job at Willy's Widgets on Tuesday afternoon and made 75 widgets. He also worked Thursday afternoon and again on Saturday. The ratio of Desmond's hours at work on Tuesday, Thursday, and Saturday, respectively, was 3:4:6, and he worked at the same average rate each day. What was the total number of widgets Desmond made at work during those 3 days?

• 225
• 325
• 375
• 450

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.2

CCSS.7.RP.A.3

In a certain neighborhood, property values are 4½% more this year than they were last year. If a family bought a house last year worth $120,000, what is the value of the house this year?

• $120,450
• $125,400
• $140,000
• $365,000

The Northwest High School Booster Club is mailing printed address labels to 2100 potential sponsors. The Booster Club's goal is to have proceeds of $750 after paying $150 for the mailing. According to past fundraisers, the average donation was $15 per sponsor. Assuming this average, how many of the potential sponsors need to donate to reach the goal?

• 140
• 70
• 60
• 40

The price of a bookcase increased from $80 to $100. The price increase by what percent? 

• 16%
• 20%
• 25%
• 30%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

A drawer contains 10 pink socks, 12 green socks, and 9 orange socks, How many additional pink socks must be added to the 31 socks already in the drawer so that the probability of randomly drawing pink socks is 4/7?

• 7
• 13
• 18
• 22

Rose, a bakery employee, asked each of 100 customers which 1 of 5 cupcake flavors the customer preferred. The number of customers who preferred each flavor is given in the table below. Rose plans to bake 1,000 cupcakes in the proportions, by flavor, given in the table. How many red velvet cupcakes will be baked?

• 27
• 54
• 135
• 270

Ella has a cup of chicken noodle soup at Sydney's Saloon 5 times. Ella paid full price for the first 4 cups of soup, and had a coupon for the 5th cup of soup, giving her a 20% discount on the 5th cup of soup. Given the table below, how much did Ella pay for the 5 cups of soup?

• $14.00
• $16.80
• $17.50
• $20.00

The intensity of a sound in decibels varies inversely with the square of the distance from the source of the sound. A person stands 4 meters from a speaker. How many meters from the speaker would the person need to be for the sound intensity to be half what it currently is?

• 4√2
• 4
• 2√2
• 2