Ratios

Percy’s Pizza Parlor sells three sizes of pizza. What is the ratio of the diameter of the medium pizza to the diameter of the small pizza?

• 6:7

• 1:1

• 7 to 6

• 12/17

Answer explanation

The ratio of the diameter of the medium pizza to the diameter of the small pizza is 1:1, indicating they are the same size. Therefore, the correct answer is 1:1.

Reece practices free throws each afternoon. His average ratio of baskets to free throws is 4:10. At this rate, how many baskets can Reece expect to make if he shoots 45 free throws?

• 4

• 15

• 18

• 21

Answer explanation

Reece's ratio of baskets to free throws is 4:10. To find how many baskets he makes from 45 free throws, set up a proportion: (4/10) = (x/45). Solving gives x = 18. Thus, he can expect to make 18 baskets.

John has 3 apples, 2 bananas, and 4 oranges. What is the ratio of bananas to apples?

• 3 to 2

• 2 to 4

• 2 to 3

• 4 to 3

Answer explanation

To find the ratio of bananas to apples, divide the number of bananas (2) by the number of apples (3). This gives a ratio of 2 to 3, which is the correct answer.

John has 3 apples, 2 bananas, and 4 oranges. What is the ratio of fruit to oranges?

• 3 to 4

• 9 to 4

• 4 to 3

• 4 to 9

Answer explanation

To find the ratio of total fruit to oranges, first calculate total fruit: 3 apples + 2 bananas + 4 oranges = 9 fruits. The ratio of fruit to oranges is 9 to 4, making '9 to 4' the correct choice.

Twelve out of fifteen students have a cell phone. What is the ratio of students who do not have a cell phone to those who do?

• 1 to 4

• 12 to 15

• 1 to 5

Answer explanation

Out of 15 students, 3 do not have a cell phone (15 - 12 = 3). The ratio of students without a cell phone (3) to those with one (12) simplifies to 1 to 4, making '1 to 4' the correct answer.

What is the ratio of bananas to monkeys?

• 4 to 5

• 9 to 4

• 5 to 9

• 5 to 4

Answer explanation

The ratio of bananas to monkeys is given as 5 to 4, meaning for every 5 bananas, there are 4 monkeys. This indicates a greater number of bananas compared to monkeys, making '5 to 4' the correct choice.

A mallard duck has 13 ducklings. Five of the ducklings are male. What is the ratio of male to female ducklings?

• 13 to 5

• 5:8

• 5/13

• 8 to 13

Answer explanation

The mallard duck has 13 ducklings, with 5 being male. This means there are 8 female ducklings (13 - 5 = 8). The ratio of male to female ducklings is 5:8, making '5:8' the correct choice.

In Mr. Reed’s class there are 20 boys and 15 girls. What is the ratio of girls to boys?

• 4 to 3

• 3 to 4

• 4 to 5

Answer explanation

To find the ratio of girls to boys, divide the number of girls (15) by the number of boys (20). This simplifies to 3 to 4, as 15/20 = 3/4. Therefore, the correct answer is 3 to 4.

In a basket, there are 8 red balls and 12 blue balls. What is the ratio of red balls to blue balls?

• 2 to 3

• 3 to 2

• 4 to 3

• 2 to 5

Answer explanation

To find the ratio of red balls to blue balls, divide the number of red balls (8) by the number of blue balls (12). Simplifying 8:12 gives 2:3, which is the correct ratio.

A recipe requires 3 cups of flour and 2 cups of sugar. What is the ratio of flour to sugar?

• 3 to 2

• 2 to 3

• 1 to 2

• 2 to 1

Answer explanation

The recipe uses 3 cups of flour and 2 cups of sugar. The ratio of flour to sugar is calculated by comparing the two quantities, which gives us 3 to 2. Therefore, the correct answer is 3 to 2.