Question

If India's population is increasing at the rate of $13.6$ million per year, then what percentage of increase in world's population in one calendar year is contributed by the Indians?

[Given: Current World population is $730$ million, and it increases by $10\%$ every year]

• A. $1.5\%$
• B. $17\%$
• C. $1.7\%$
• D. $15\%$

Answer 1

The correct option is C $1.7\%$

Total population of world - $730$ million.
World population after $1$ year - $803$ million [$10\%$ increases every year].
India's population - $x$ Million
Increase of India's population - $13.6$ million in one year.

So, population of India would be - $x+138.6$ Millions
Hence, contribution of India in total population is - $\frac{13.6\times 100}{803}=1.7\%$.

Therefore, the correct answer is option C.