Every banking exams like IBPS PO, IBPS clerk, SSC and MBA exams as well such as CAT have 3-4 questions appearing from percentage section alone. So, it is important that you study percentage chapter well. And therefore it is not possible to cover the entire chapter in one section. And that is why we are discussing one topic at a time. Today we will be discussing on relative percentage.

Relative Percentage                                                                                                                                      

In relative percentage, usually, questions are asked in form of comparison. You are required to find out the comparison between two people or objects or products. This will be understood better by using some of the solved examples. But before going into some questions, we will provide you with some of the basic formulas required to solve percentages. There are many different types of percentage questions that can be asked in the exam like percentage change, successive percentage, relative percentage, etc.

Basic Rules of Percentage

  •  p % of y = (p/100) x y = y % of p.
  • To find what percent of a is b: b/a x 100.
  • Increase in A by B % = A( 1 + B/100)
  • The decrease in A by B % = A(1 – B/100)
  • When the price of the item increases by n % than the reduction of quantity should be 100n/ (100 + n) % so that the total expenditure of the item remains the same.
  • For successive percentage change, if the price of the quantity increases by x % and y %, then the percentage increases will be {x + y + (xy/100)}.
  • When the price of an item increases by x % than the increase in the consumption so that the expenditure does not increase is {(x/100 + x) x 100 %}.
  • While the formula for the price of an item decreases by x %, when there is a decrease in the consumption so that the expenditure does not decrease is {(x/100-x) x 100%}.