| Quantitative Aptitude Important Formulas Logical ReasoningGeneral Knowledge of MPGeneral Knowledge of India |
Percentage - Important Formulas,Tricks and Examples |
X percent means X hundredths, written as X% => X/100 If X % of Y = X * Y/100 If the price of the commodity decreases by R%,then the increase in consumption If the price of a commodity increases by R%, then the reduction in consumption If the present population of the town is P now and it increases at the rate of R% per annum, then: If the present population of the town is P now and it decreases at the rate of R% per annum, then: If the present value of a machine is P now and it depreciates at the rate R% per annum, then: If a number A is increased successively by x% followed by y% and then by z%, If A is R% more than B, then B is less than A by [R/(100+R))*100]%. If A is R% less than B, then B is more than A by [(R/(100-R)*100]%. If the value of a number is first increase by x% and later decrease by x% , then the net effect is always a decrease (x/10)2 %. If the value of a number is first changed ( increased +ve or decreased -ve) by x% and then changed (increased or decreased ) by y% ,then net change % = { ± x ± y + [(±x±y)/100]} % |