The ratio between the present ages of a girl and a boy is 5: 4. Four years ago, the boy's age was 24 years. What will be the girl's age after five years?

Correct option is B

Given:

1. The present age ratio of the girl and the boy is 5:4

2. Four years ago, the boy's age was 24 years.

3. We need to calculate the girl’s age after five years.

Solution:

1. Calculate the present age of the boy:

Since the boy’s age 4 years ago was 24 years:

Boy's present age = 24 + 4 = 28 years

2. Find the girl's present age using the ratio:

The ratio of their ages is 5:4 . Let the girl's age be 5x and the boy's age be 4x .

4x = 28

Solve for x :

x = $$\frac{28}{4} = 7$$​

The girl's present age is:

5x = $$5 \times 7 = 35$$​ years

3. Calculate the girl’s age after 5 years:

Girl's age after 5 years = 35 + 5 = 40 years

Final Answer:

The girl’s age after five years will be 40 years