In one year, the population, of a village increased by 10% and in the next year

Question

In one year, the population, of a village increased by 10% and in the next year, it decreased by 10%. If at the end of 2nd year, the population was 7920, what was it in the beginning?

Options:

A . 8500

B . 8000

C . 8100

D . 8400

Answer: Option B

x*110/100 * 90/100 = 7920

X*0.99=7920

X=7920/0.99

=> 8000

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