PERCENTAGES CONCEPTS,FORMULAS,DEFINITIONS,EXAMPLES,TRICKS
PERCENTAGES is very important chapter for all competitive exam and everything is included in it like all Problems on percentages, fractions and percentages, price change,result and population,results on depreciation,comparison of percentages,successive increase and decrease etc. Percentages The Percentage is a fraction whose denominator is always 100. The percentage sign is %. Example - 7% can be converted to a fraction as 7/100 = 0.07 If, we want to calculate P% of Q, then Percentage Formula:- P% of Q = Q× P/100 Qes. If 30% of x = 60, then find the value of P. Soln . x × 30/100 = 60 ⇒ x = 60 × 100/30 ⇒ x = 200. Fractions and Percentages To express Y % as a fraction, Y% = Y/100 As - 30% = 30/100 = 3/10 98% = 98/100 = 49/50 To Express X/Y as a percentage we can say, X/Y = (X/Y × 100) % ...
