SSC CPO 2024 PYQ — Question 149

The correct answer is option 1 i.e. 925925.93.

According to the given question,

Let the population of the town 3 years ago be x and population of the town 2 years ago be y.

⇒ $x \times {120 \over 100} \times {120 \over 100} \times {120 \over 100}$ = 80,00,000

⇒ x = 4629629.62963

Population of town 2 years ago,

⇒ $y \times {120 \over 100} \times {120 \over 100}$ = 80,00,000

⇒ y = 5555555.55556

The required difference = y - x

⇒ 5555555.55556 - 4629629.62963 = 925925.93

Hence the difference between the population three years ago and 2 years ago is 925925.93.