Ratio Proportional Reasoning

Q1. What is the sum of 105 and 130?

• A) 205

• B) 105

• C) 230

• D) 135

Kevin is mixing paint to make orange. The ratio of red paint to yellow paint is 3 oz to 5 oz. How much yellow paint should he mix with 9 oz of red paint?

• 15 oz

• 30 oz

• 45 oz

• 11 oz

Find the missing value.

• 16

• 109

• 190

• 18

Jamie made a scale drawing of his apartment building.  The building is 300 ft tall.  He wants his scale to be 1 inch : 10 ft.  How tall should his building be in his scale drawing?

• 25 inches

• 60 inches

• 1/30 inch

• 30 inches

In the proportion below, what value of    x  would make the ratio on the right    equal to the one on the left? 
12/16=x/20

• 15

• 16

• 24

• 25

The local grocery store has a sign near the sodas that reads “8 cans for $5.20.” What is the unit rate?

• $0.55 per can     

• $0.60 per can

• $0.65 per can   

• $0.70 per can

Marcus and his parents are going on vacation. The table shows the number of hours they   drive and miles they travel. Use one of the   data points to find “k” (the constant of   proportionality). 

• 40 miles/hour

• 60 miles/hour

• 80 miles/hour

• 120 miles/hour

Observe the graph below. What are Dan’s and Debra’s constants of proportionality, respectively? 

• Dan 3, Debra 2   

• Dan 2, Debra 3   

• Dan 4, Debra 6   

• Dan 6, Debra 4

The table below represents the number of cups of coffee (y) produced by a coffee machine in (x) seconds measured at different times. Use the information in the table to find the constant of proportionality for this situation.

• 42 cups/sec

• 7 cups/sec

• 9 cups/sec

• 12 cups/sec

Which equation represents a proportional relationship? 

• y = 8x + 1

• y = 2 + 7x 

• y = -4x

• y = 24x – 8