the population of a place increase 5 percent if the population in 2011 was 5400 then:a) find the population in 2009 b) find the population in 2013
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A)- Find the population in 2009
Solution :-
population in 2011 = 5400
Population increases every year = 5%
Population in 2010 = 5% of 5400
=> 5/100×5400
=> 5×54
=> 270
New number = 5400-270 = 5130
Population in 2009 = 5% of 5130
=> 5/100×5130
=> 513/2
=> 256.5
new number = 5400-256 .5 = 5143.5
Population of place in 2009 is 51,143.5
B)- Find the population in 2013
Solution :-
Population in 2011 = 5400
Population increases every year = 5%
Population in 2012 = 5% of 5400
=> 5/100×5400
=> 5×5400
=> 270
New number = 5400+270 = 5670
Population in 2013 = 5% of 5670
=> 5/100×5670
=> 567/2
=> 283.5
New number = 5670+283.5 = 5953.5
population of place in 2013 is 5,953.5
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