Ratio

1. In Ruth's class there are 12 boys and 18 girls. Write the ratio of boys:girls in its simplest form.

• 12:18

• 2:3

• 18:12

• 3:2

2. Ruth has 2 children Aaron 18 years old and Neve 16 years old. What is the ratio of their years Aaron:Neve in simplest form.

• 18:16

• 16:18

• 9:8

• 36:32

3. The ratio of men:women working in a company is 7:3. How many women are there if there are 100 people in total?

• 30

• 70

• 3

• 7

4. The ratio of cups of flour:cups of water in a pizza dough recipe is 9:4. A pizza restaurant makes a large quantity of dough, using 36 cups of flour. How much water should they use?

• 16 cups

• 13 cups

• 11 cups

In a class, there are 2 girls for every 18 boys. There are 40 young people in the class. How many boys are there?

• 18 boys

• 36 boys

• 4 boys

• 40 boys

Cement ratio is 1 part cement to 4 parts sand to 7 parts gravel. If I use 2 kg of cement how much sand and gravel are required?

• 4 kg sand, 7 kg gravel

• 6 kg sand, 12 kg gravel

• 80 kg sand, 140 kg gravel

• 8 kg sand, 14 kg gravel