Percentage Problems for SSC CGL

1.

The population of a twon increased each year by 3% of its total at the beginning of the year. If the population on 1st january 2007 was 600000, what it on 1st January 2010?

   A.) 653636
   B.) 655636
   C.) 455636
   D.) 659836

Answer: Option 'B'

Population 1st January 2007 = 60000
Time span = 2010 - 2007 = 3 years
Increase rate = 3%
Population after 3 years
= Population in beginning x [(1 + (increasing rate)/100]time span
= 600000(1 + (3/100))3
= 600000 x (1.03)3
= 600000 x 1.092727 = 655636.2 = 655636


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