If the current population is 80000, what is the likely population three years hence?

In a medium-size township, the trend of annual immigration is an addition of 20% of the population as it was at the beginning; also 15% of the population as it was at the beginning is estimated to relocate elsewhere every year. If the current population is 80000, what is the likely population three years hence?
(a) 90000
(b) 91200
(c) 92000
(d) 92610

Anurag Mishra Professor Asked on 12th January 2016 in Maths.
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    Answer: (d) 92610 

    Anurag Mishra Professor Answered on 12th January 2016.
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