Certain Community has a total population of 1700 people. 750 people are above 16 years and are adult. 130 years and the rest under 16 years. Find the fraction of children in the community.

The adults consist of those above 60 years and those between 18 and 60 years.

$$\text{Total adults} = \text{People above } 60 \text{ years} + \text{Adults between } 18 \text{ and } 60 \text{ years}$$ $$\text{Total adults} = 750 + 120$$ $$\text{Total adults} = 870$$

The number of children is the total population minus the total number of adults.

$$\text{Number of children} = \text{Total population} - \text{Total adults}$$ $$\text{Number of children} = 1700 - 870$$ $$\text{Number of children} = \boxed{830}$$

The problem states that 750 people are above 60 years.

$$\text{Number of people above } 60 \text{ years} = \boxed{750}$$

Fraction of children in the community:

$$\text{Fraction of children} = \frac{\text{Number of children}}{\text{Total population}}$$ $$\text{Fraction of children} = \frac{830}{1700}$$

$$\text{Fraction of children} = \frac{83}{170}$$ $$\text{Fraction of children} = \boxed{\frac{83}{170}}$$