The population of a village is 6000. It decreases annually at the rate of 10% p.a. What will be its population after 2 years?
Answers:
A) 5000 B) 4860 C) 5400 D) 4800 E) 5120

Rationale: formula : ( after = 100 denominator ago = 100 numerator ) 6000 ã — 90 / 100 ã — 90 / 100 = 4860 b
Answer: B