If annual decrease in the population of a town is 10% and the present number of people is 500 what will the population be in 1 year?	Choose the correct option: A) 450 B) 310 C) 250 D) 410 E) 390

Rationale: "population in 1 year = 500 ( 1 - 10 / 100 ) = 500 * 90 / 100 = 450 answer is a"
Answer: A