Ratio Proportion Set Up

Cindy’s job is to check computer printers for defects. Out of 420 printers she has to check, only 3 of the first 84 have been defective. Using this information, what is the best prediction of the TOTAL NUMBER OF DEFECTIVE PRINTERS?(Set up your ratio)

If a class has 14 redheads, 8 brunettes, and 6 blondes- What is the REDUCED ratio of redheads to brunettes?

• 4:7

• 14:8

• 8:14

• 7:4

If a class has 14 redheads, 8 brunettes, and 6 blondes- What is the REDUCED ratio of redheads to blondes?

• 3:7

• 14:6

• 6:14

• 7:3

If a class has 14 redheads, 8 brunettes, and 6 blondes- What is the REDUCED ratio of blondes to brunettes?

• 3:4

• 8:6

• 6:8

• 4:3

A model airplane is made to the scale 1 inch to 24 inches. If the wing of the actual plane is 18 feet long, how long will the model wing be in inches?

Pat needs 14 sticks of pepperoni to make 28 pizzas. How many sticks of pepperoni are needed to make 36 pizzas?

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12 ounce shampoo bottle lasts Mike 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him?

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Danielle used 8 centimeters of tape to wrap 4 presents. How many presents did Danielle wrap if she used 30 centimeters of tape?

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3 meals at Jason's Deli cost $27. How much money would 12 meals cost?

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To make 24 ounces of hot chocolate, 6 tablespoons of cocoa are needed. Set up a proportion to solve to find how much hot chocolate is made from 144 tablespoons of cocoa. Which number goes in place of the question ? in the proportion below? \frac{24}{?}=\frac{x}{144}

• 24

• 6

• 144