Percentage Problems And Concept In Aptitude For Competitive Exams

April 19, 2012 by · Leave a Comment
Filed under: Study Material 

Percentage Means Per Hundred And It Is Termed As %.Suppose P% It Means P/100. For Solving Percentage Problem Speedly And Accurately For Competitive Exams Like CAT, Bank PO, SSC, Company Campus Exams And Other Government Exams, We have To Memorize The Below Fraction Table:

  • 1/1 = 100%
  • 1/2 = 50%
  • 1/3 = 33.33%
  • 1/4 = 25%
  • 1/5 = 20%
  • 1/6 = 16.66%
  • 1/7 = 14.28%
  • 1/8 = 12.5%
  • 1/9 = 11.11%
  • 1/10 = 10%
  • 1/11 = 9.09%
  • 1/12 = 8.33%
  • 1/13 = 7.69%
  • 1/14 = 7.14%
  • 1/15 = 6.66%
  • 1/16 = 6.25%
  • 1/17 = 5.88%
  • 1/18 = 5.55%
  • 1/19 = 5.26%
  • 1/20 = 5%

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Important Formulas For Percentage:

1.Percentage Increase: (Increase/Original Value)*100
2.Percentage Decrease: (Decrease/Original Value)*100
3.Let The Population Of India Is P And It Continuously Increases With R Percentage,
Then Population After N Years Would Be: P(1+R/100)^N
Population N years Before Would Be: P/(1+R/100)^N

When We Condsider Decrement At The Rate Of R% Per Annumn Then,

Population After N Yeras = P(1-R/100)^N
Population N Years Before = P/(1-R/100)^N