Hawk King

  In this article we will learn how to deal with successive percentage increase/ Decrease. Problem based on successive percentage increase/ Decrease are very frequent in competitive examinations. Understanding Successive percent increase/decrease is very important. Since successive percentage increase/decrease is used while solving problems related to Profit, Loss, Discount & Compound Interest problems. Let us understand first concept of Multiplying Factor (M.F.) Multiplying Factor (M.F.)                                                        Case 1:   When a quantity is increased by certain percentage. A) Suppose we have to increase a value 120 by 10%. What will be the final value? Final Value= Initial Value + 10% of Initial Value                 ...

  In this Article you will learn :       The Magical A-B Rule and its application in following cases: CASE 1 : A’s income x%  more than  B, by how much percentage B’s income is  less than  A CASE 2 : A’s income x%  less than  B, by how much percentage B’s income is  more than  A CASE 3:  Problems related to Profit/Loss, Selling Price & Cost Price. CASE 4:  When  A X B = Constant  (when product of two quantities is constant AB Rule can be applied) Case 4.1 :  Price x Consumption= Expenditure  (if Expenditure is constant AB Rule can be applied) e.g. When Price of sugar is increased/decreased by 20% by how much consumption should decrease/increase so that expenditure is constant. CASE 4.2 : For rectangle  Length x Width = Area  (if Area is constant AB Rule can be applied) e.g. If length of Rectangle is increased by 20%.By how much percentage width should decrease so that area of rectangl...