The population of a certain village increases by 5% annually. Its present population is 8000.

The population of a certain village increases by 5% annually. Its present population is 8000. What will be the population after three years ?
nagarajanpc
Asked Jan 31, 2010
Edited Jan 31, 2010
9,261
davipa
Answered Feb 16, 2010
Next time can you please walk through the steps of how you arrived at that answer? If you give a man a fish, he eats for a day, if you teach him to fish, you feed him for life.
Give a man a fire, he will stay warm for a day. Set a man on fire and he'll stay warm for the rest of his life. I prefer that one :-)
kizl Apr 01, 2010
My personal favorite is give a man a fish, feed him for a day, sell a man a fish, make some profit, but this website isn't about making profit, so I figured I'd go with the original :P
you can just increase the population by 5% and continue the same with the result, until u get the desired year's population.
8000+5%*8000=8400
8400+5%*8400=8820
8820+5%*8820=9261

or simply you could use the formula;
Final Population=Initial Population*(1+Rate/100)^Time

Final Popn=8000*(1+5/100)^3=9261

This can also be used to calculate the price, and other stuffs that increase by a constant rate annually. If there is reduction, just put the rate as negative...
Lizard32
Answered Mar 27, 2010

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