Question Details

The following table shows Net National Income (in Lac Crore) and Per capita Net National Income (in thousand) of India during the 5 year period from the year 2015-16 to 2019-20. Based on the data in the table, answer the questions that follow

 Year Net National Income
(in Lac, Crore rupees)
Per Capita Net
National Income
(in thousand rupees)
2015-16  122 95
2016-17
 136
 105
 2017-18
 151
 115
 2018-19
 167
 126
 2019-20
 177
 132

With reference to the year 2015-16, the percentagem growth in the population of India by the year 2019-20 is

Options

A

∼ 6.2%

B

∼ 4.4%

C

∼ 7.1%

D

∼ 3.1%

Show Answer

Correct Answer :

Option B

∼ 4.4%

Solution :

The correct option is ∼ 4.4%.

Step-by-Step Explanation:

To find the percentage growth in the population of India from the year 2015-16 to the year 2019-20, we can use the mathematical relationship between Net National Income, Per Capita Net National Income, and Population.

The formula for Per Capita Net National Income is given by:
Per Capita Net National Income = Net National Income Population

Rearranging the terms, we can express the population as:
Population = Net National Income Per Capita Net National Income

Thus, the population (P) is directly proportional to the ratio of Net National Income to Per Capita Net National Income:
P Net National Income Per Capita Net National Income

From the table, we extract the following data points for the reference year 2015-16 and the target year 2019-20:
1. For 2015-16: Net National Income = 122 Lac Crore rupees; Per Capita Net National Income = 95 thousand rupees.
2. For 2019-20: Net National Income = 177 Lac Crore rupees; Per Capita Net National Income = 132 thousand rupees.

Let's calculate the relative population values for both years:

For 2015-16:
P 2015-16 122 95

For 2019-20:
P 2019-20 177 132

Now, we compute the percentage growth in population from 2015-16 to 2019-20 using the growth formula:
Percentage Growth = P 2019-20 P 2015-16 - 1 × 100

Substituting the proportional values:
Percentage Growth = 177 / 132 122 / 95 - 1 × 100

Simplifying the fraction:
Percentage Growth = 177 × 95 132 × 122 - 1 × 100

Calculate the products in the numerator and denominator:
177 × 95 = 16815
132 × 122 = 16104

Substitute these values back into the percentage growth equation:
Percentage Growth = 16815 16104 - 1 × 100
Percentage Growth = 16815 - 16104 16104 × 100
Percentage Growth = 711 16104 × 100
Percentage Growth 0.04415 × 100 4.415 %

Therefore, the percentage growth in the population of India by the year 2019-20 is approximately 4.4%.

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