Question

An apartment building has 1500 residents. Every year 10% of the residents move out and no one new moves in. How many residents will live there is 7 years?

Answer 1

717.44535

Explanation:

P is the population in the beginning

r = population decrease per year = 10%

n = years = 7

P*(1-r/100)^n

1500(1-(0.10)^7

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