The population of a certain village increases by 5% annually. Its present population is 8000. What will be the population after three years ?
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The population of a certain village increases by 5% annually. Its present population is 8000.
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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.
Oni_Kami Feb 16, 2010
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
Oni_Kami Apr 01, 2010
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...
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...
Answered Mar 27, 2010
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