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50 Keys to CAT From TestFunda.pdf

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    50 Keys To CAT Arithmetic, Algebra, Geometry and Modern Mathematics A collection of 50 very important formulae for Quantitative Ability Section of CAT from the pioneers of online CAT training ▪  EASY  ▪  EFFECTIVE  ▪  PERSONALISED    ©  2008 Enabilon Learning Pvt. Ltd. All rights reserved. 1  1.    Averages 2.   Mean For two numbers a  and b , 3.   Percentage Change For two successive changes of a % and b %, 4.   Interest Amount = Principal + Interest       ©  2008 Enabilon Learning Pvt. Ltd. All rights reserved. 2  5.   Population Formula [Here, P   = Original population, P  ’ = population after n  years, r  % = rate of annual change] 6.   Depreciation Formula [Here, P   = srcinal value, P  ’ = final value after n  years, r  % = rate of annual depreciation] 7.   Growth Absolute Growth = Final Value –  Initial Value [Here, S. A. G. R. = Simple Annual Growth Rate, A. A. G. R. = Average Annual Growth Rate and C. A. G. R. = Compound Annual Growth Rate] 8.   Profit and Loss Profit = SP −  CP Loss = CP −  SP    ©  2008 Enabilon Learning Pvt. Ltd. All rights reserved. 3  9.   False Weights If an item is claimed to be sold at cost price, using false weights, then the overall percentage profit is given by 10.   Discount Discount = Marked Price −  Selling Price Buy  x   and Get  y   Free If articles worth Rs.  x   are bought and articles worth Rs.  y   are obtained free along with  x   articles, then the discount is equal to  y   and discount percentage is given by Successive Discounts When a discount of a % is followed by another discount of b %, then 11.   Ratios If a : b  = c : d  , then a : b  = c : d =   ( a  + c ) : ( b  +  d  ) If a  < b , then for a positive quantity  x  ,

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Oct 7, 2019
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