Ratio Proportions

A duck pond is being filled with water. Which situation represents a proportional relationship between the time the pool is being filled and the water level?

• A pond was filled at a rate of 14 inches per hour the first hour and then at a rate of 16 inches per hour.

• An empty pond was filled at a rate of 14 inches per hour.

• A pond started with 10 inches of water and was filled at a rate of 14 inches per hour.

• The pond started with 4 feet of water and was filled at a rate of 14 inches per hour.

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

Solve the proportion.

• 9

• 90

• 900

• 25

Solve the proportion for r.

• 2.5

• 1

• 3.25

• -2.25

Alycia earned $20.40 in 3 hours. What is her unit rate in dollars per hour?

• $7 per hour

• $6 per hour

• $6.80 per hour

• $17.40 per hour

Will spent $3.75 for 3 pounds of granola. What is his unit rate in dollars per pound?

• $1.25 per pound

• $1 per pound

• $2 per pound

• $1.50 per pound

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound

• $3.60 per pound

• $1.20 per pound

• $1.10 per pound

Robbie made a scale drawing of a neighborhood park. A soccer field in the park is 14 inches long in the drawing. The actual field is 98 yards long. What is the scale of the drawing? 1 inch = _ yards

• 1372

• 5

• 14

• 7

The scale drawing car length is 3 cm. If the scale is 1 cm:4 ft, what is the actual car length?

• 12 feet

• 16 feet 

• 10 feet

• 4 feet

From Denver to Chicago = 3 in. If the scale is 1 in = 300 miles, find the actual distance.

• 300 miles

• 1000 miles

• 900 miles

• 600 miles