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Basic Concepts of Percentages - Part 3 (in Hindi)
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Successive percentage change and it's application

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1. THE CONGEPTS OF PERCENTAGES- 3 By- SHARAD GUPTA

2. SESSIVE PECENTAGE CHANGE +20% (a% l300 +2.5% 10 00 > 1500 1000 5% Dverall change Ne l00 ysber 20 % 40% 800 Overall change 1120 -20 + 40 + (-20)x 40-lt 12 % 0oAngdr Dverall % change-la+ b ta.e l ) 100

3. contd eng Overal change can be calculated b Stepeli-first calculate the resultant of ang 2 % changes a+btaband tet it equal to R, , re l00 Step: 11- Now, keep the value of R1 with 3rd % change An the overal. % chny. formula, ie, R,+e+ R74 , and 1st it equal to R . So & 100 ll be the overall % change

4. Quess- calculate the overall % change , B-+25% C-30% D a= +20 %, b=+as %, c=-30% +20 % 25% Sotn_ Hist % charme420 -120+85 + 20 x 25-1+50% St o change 100 Overall change = +50+1-30)+50 (-30)- t5%)Ancwer l 00 ou0 NOTE :-Same procedure can be followed for for er OTE Same pro percentage changes

5. APPLILATIONs OF SUcCESSIVE CHANGE Suppose,x-R it we change the value of Pbya%, value of Q by, b %, then value of R will change by la+b+_ % loo Ques:-The 1ergh, and Lreadth of a rectangle are increased bt 10% :-The length and breadHj 0f arectangle arencreased by 10% and 20% reg ts area. Arca length x breadth % change in Area +10% +20% o0 Apsiwe

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