Understanding Ratio Word Problems Involving Ages

What is the initial ratio of Anna and Bob's ages?

• 4 to 9

• 9 to 4

• 3 to 5

• 5 to 3

How do you express Anna's age seven years later in terms of x?

• 4x + 7

• 9x + 7

• 7x + 9

• x + 9

What is the equation set up to find the ages seven years later?

• (7x + 9) / (3x + 5) = 4 / 9

• (9x + 4) / (7x + 4) = 5 / 3

• (4x + 7) / (9x + 7) = 3 / 5

• (9x + 7) / (4x + 7) = 5 / 3

What is Anna's present age if x equals 2?

• 16 years

• 18 years

• 20 years

• 22 years

What is Bob's age seven years later if x equals 2?

• 18 years

• 15 years

• 25 years

• 20 years