Percentage problems are generally asked in all major exams like SSC, IBPS,CAT, GATE etc.These problems become complex if we do not have basic concept of problems.We will deal with concept of percentage problems and formulas are given at the end of this chapter to help students revise important formulas and concepts.
Concept Of Percentage
By certain percentage we mean many hundredths.It means X % means X hundredths.
There are two things which should be clear to us.
 1.Conversion into percentage
 In order to convert some quantity(say X) into percentage.We simply multiply that quantity with 100.
For example:
Convert 5/2 into percentage.
We simply multiply it with 100=(5/20)*100=250%
 2.Conversion into Fraction from given percentage
 If we have given X %.In order to change it into fraction we simply divide it with hundred i.e X/100.
For example:
Convert 20% into fraction
20/100 = 1/5
In percentage, a term ‘OF’ is used.Like, 20% “OF” all students play cricket and rest play football. If there are 50 students in the class, 20% “OF” 50 students play cricket.
It means (20/100) * 50 =10 students play cricket.Replace “of” with a multiplication sign.
Intext Question: 


Percentage Important Formulas 


sir please add some question for the practice .the concept is good and very clear to us .kindly add some questions for practice
kk priti currently i am working on problems you can see practice quantitative aptitude section