Calculate the dependency ratio given the following age distribution: 0-14 years (25%), 15-60 years (45%), Above 60 years (30%).

The dependent population includes those aged 0-14 years and those above 60 years.
From the table:

• Age group 0-14: 25%
• Age group Above 60: 30% Total dependent population percentage:

$$25\% + 30\% = 55\%$$

The working-age population includes those aged 15-60 years.
From the table:

• Age group 15-60: 45% Total working-age population percentage:

$$45\%$$

The dependency ratio is the ratio of the dependent population to the working-age population.

$$\text{Dependency Ratio} = \frac{\text{Dependent Population}}{\text{Working-age Population}}$$ $$\text{Dependency Ratio} = \frac{55\%}{45\%}$$

Divide both numbers by their greatest common divisor, which is 5.

$$\frac{55}{45} = \frac{55 \div 5}{45 \div 5} = \frac{11}{9}$$

The ratio is $11:9$.

The calculated dependency ratio is $11:9$, which corresponds to option A.

The final answer is $\text{A) 11:9}$.