Ratios and Proportions

During Emma’s trip across the country, she traveled 1,890 miles. Her trip took 6 days. Find a unit rate to represent the average miles she traveled per day during the trip.

• 315

• 0.003

• 310

• 0.004

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Roxanne baked 2 cakes in 3 hours, 3 cakes in 4 hours, and 4 cakes in 5 hours. Determine whether the number of cakes baked is proportional to the number of hours.

• yes

• no

Tags

CCSS.7.RP.A.2A

About 7 out of 20 homes have a dishwasher. On a street with 60 homes, how many would you expect to have a dishwasher?

• 14

• 171

• 21

• 120

Tags

CCSS.7.RP.A.3

The number of cups of flour varies directly as the number of croissants made. Three cups of flour are needed to make 12 croissants . How much flour is needed for 32 croissants ?

• 2

• 8

• 3

• 10

An outdoor swimming pool costs $7.50 per day to visit during the summer. There is also a $40 yearly registration fee. Is the total cost proportional to the total number of days visited?

• yes

• no

Tags

CCSS.7.RP.A.2A

Louis was offered $7,497 per year for a weekend job at a department store. He wants to know how much his monthly income will be at this salary level. What is his rate of pay in dollars per month?

• 681.55

• 749.70

• 624.75

• 833

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

It rained 4 inches in one hour, then after two hours, it had rained a total of 5 inches. After four hours, it had rained a total of 7 inches. Determine whether the number of inches of rainfall is proportional to the number of hours.

• proportional

• not proportional

Tags

CCSS.7.RP.A.2A

The Morants family are using the graph to determine the

total cost of vacationing at a resort. Use the graph to find the constant of proportionality.

• 125

• 0.008

• 150

• 0.007

Tags

CCSS.7.RP.A.2B

An 8-ounce bag of pretzels contains 68 pieces. How many pieces would you expect in a 12-ounce bag?

• 45

• 2

• 96

• 102

Tags

CCSS.6.RP.A.3B

A 12-ounce bottle of lotion lasts Lynette 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last her?

• 13.5

• 24

• 14

• 32

Tags

CCSS.6.RP.A.3B