PERCENTAGE.pptx...................................

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1. Percentages

2. Percentage ‘%’ -> ‘ 1/100 ‘ Percentage  Decimal/Fraction 40 % Divide by 100 0.4 , 2/5 Percentage  Decimal/Fraction 25% Multiply by 100 0.25 , 1/4

3. Fraction Chart / Reciprocal Chart                              

6. Most commonly used:- a is what percentage of b ?  Percent Of :- Milk is what percent of Solution? Boys are what percent of class? Class is what percent of girls?

7. a = 40 b is 75% of a . Find b b is 200 % of c. Find c a is what % of c?

8. Percentage Change 50 60 +10 1000 1010 +10 % change = % change = 30 40 +10 40 30 -10 % Increase = % Decrease = m n % Increase = % Decrease =

9. Percentage More than / Less than Assume two values p & q (p<q) 1) p is what % of q 2) q is what % of p 3) p is what % less than q 4) q is what % more than p

10. Multiplying Factor Percent of: Milk is 60% of the solution M = 0.6 S Boys are 80% of the class strength B = 0.8 C Amar saves 40% of his income S = 0.4 I

11. Multiplying Factor Percent more than / less than: Salary of Amar is 40% more than salary of Bharat A = 1.4 B Weight of basketball is 25% more than weight of football B = 1.25 F Score of A was 20% less than score of B A = 0.8 B Revenue of Hero motors was 35% less than revenue of Bajaj Auto H = 0.65 B

12. Multiplying Factor Percentage increase or decrease: Length of a rectangle increases by 20% L(new) = 1.2 L(old) Salary of a person increases by 55% S(new) = 1.55 S(old) Weight of a person decreases by 15% W(new) = 0.85 W(old) Production of a factory decreases by 30% P(new) = 0.7 P(old)

13. Successive Percentage Change A B C +10% +20% A B C x% y% % = x + y + xy /100

14. Expenditure = Consumption x Price (per kg) Revenue = Sales (qty) x Price (per qty)