How much did the population of India increase over 50 years?

How much did the population increase in each decade?

Question

How much did the population of India increase over 50 years? How much did the population increase in each decade?

Homi · Accepted Answer

We will read the population from the bar graph for different years.

Step 1 — Total Population Increase

We need to find the population in 2001. We also need to find the population in 1951. Look at the bar for 2001. The population in 2001 was 102 crores. Look at the bar for 1951. The population in 1951 was 36 crores. To find the increase, we subtract the smaller number from the larger number.

$102 \text{ crores} - 36 \text{ crores}$

$\boxed{66 \text{ crores}}$

Diagram 1

Step 2 — Increase in Each Decade

Let us find the population increase for each 10-year period.

For 1951 to 1961: Population in 1961 was 44 crores. Population in 1951 was 36 crores.

$44 \text{ crores} - 36 \text{ crores}$

$= 8 \text{ crores}$

For 1961 to 1971: Population in 1971 was 54 crores. Population in 1961 was 44 crores.

$54 \text{ crores} - 44 \text{ crores}$

$= 10 \text{ crores}$

For 1971 to 1981: Population in 1981 was 68 crores. Population in 1971 was 54 crores.

$68 \text{ crores} - 54 \text{ crores}$

$= 14 \text{ crores}$

For 1981 to 1991: Population in 1991 was 84 crores. Population in 1981 was 68 crores.

$84 \text{ crores} - 68 \text{ crores}$

$= 16 \text{ crores}$

For 1991 to 2001: Population in 2001 was 102 crores. Population in 1991 was 84 crores.

$102 \text{ crores} - 84 \text{ crores}$

$= 18 \text{ crores}$

Answer

(i) The population of India increased by 66 crores over 50 years. (ii) The population increase in each decade was: 1951-1961: 8 crores 1961-1971: 10 crores 1971-1981: 14 crores 1981-1991: 16 crores 1991-2001: 18 crores

Question 9

Answer

More questions in IT