If the population of City-C and City-D in the age group of more than 60 years is equal to 24000 each, then what is the sum of the total population of City-C and City-D?
- AOption (a)
2.4 lakh
- BOption (b)
2.8 lakh
- COption (c)
3.2 lakh
- DOption (d)
4.8 lakh
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Correct answer
2.8 lakh
Why this answer is correct
Given:
Population of City-C in Age > 60 = 24000
Population of City-D in Age > 60 = 24000
Percentage of Age > 60 in City-C = 15%
Percentage of Age > 60 in City-D = 20%
Formula used:
Total Population = \(\dfrac{\text{Population in Age Group}}{\text{Percentage of Age Group}}\)
Calculation:
For City-C:
⇒ Total Population of City-C = \(\dfrac{24000}{15/100}\)
⇒ Total Population of City-C = 24000 × 100 / 15
⇒ Total Population of City-C = 160000
For City-D:
⇒ Total Population of City-D = \(\dfrac{24000}{20/100}\)
⇒ Total Population of City-D = 24000 × 100 / 20
⇒ Total Population of City-D = 120000
Therefore, the sum of the total population of City-C and City-D = 160000 + 120000 = 280000 = 2.8 lakh