Ratios Rates and Percentage

There are 21 boys and 6 girls in Mr. Keys' homeroom.  What is the ratio of girls to boys?  

• 6:21

• 21:6

• 2:7

• 7:2

The denominator for percentage is always....?

• 50

• 100

• 150

• 200

Which of the following is NOT a ratio?

• 7 to 8

• 9:4

• 6

  2

• 7-2

The table shows the animals at a petting zoo. What is the ratio of goats to the total number of animals? 

Chickens....2
Deer...........4
Donkey.....3
Goats........6

• 5/2

• 9/6

• 6/9

• 2/5

Jose swims 3 laps in a pool every 2 minutes. How long would it take him to swim 27 laps?

• 8 minutes

• 9 minutes

• 16 minutes

• 18 minutes

• 56%

• 70%

• 45%

• 84%

• $50.88

• $53.95

• $56.83

• $59.95

• 5%

• 14%

• 20%

• 25%

• 75

• 100

• 150

• 210

• 12%

• 15%

• 20%

• 25%