Percentage: The Magical A-B Rule & it's Applications ( Part 1 of 2)
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...