Ratios and Ratio Tables and Equivalent Ratios

To disinfect 1 quart of stream water to make it drinkable, you need to add 2 tablets of iodine. How many tablets do you need to disinfect 4 quarts?

• 4 tablets

• 5 tablets

• 6 tablets

• 8 tablets

Find the missing value for the ratio.

• 56

• 48

• 7

• 72

Solve for x 

• x = 15

• x = 11

• x = 1/11

• x = 20

• c = 4

• c = 8

• c = 14

• c = 10

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Solving Proportions

• k=5

• k=3.3333333

• k=60

• k=90

Solve the proportion.

• x = 4

• x = 5

• x = 7.2

• x = 0.2

Find the missing values in the ratio table. 

• 35, 12

• 14, 100

• 15, 30

• cannot be determined

Juliet used a 3 to 1 ratio of white to black paint in order to make a shade of gray. Which of the following ratios would give her the same shade of gray? Pick two.

• 5 to 4

• 5 to 15

• 12 :4

• 7 to 6

Julie made fruit punch for her class party. The ratio that she uses of water to sugar is 4:2. Annie's recipe that she uses, uses a ratio of 10:4 of water to sugar. Which statement is likely to be true?

• Julie's punch will taste sweeter because it will have more sugar.

• Annie's punch will taste sweeter because it has more sugar.

Match the following ratios:

• 24:9

• 3:7

• 24:72

• 5:4

• 20:16

• 7:4

• 21:12

• 2:6

• 9:21

• 8:3