Ex: The price of an article is first increased by 20% and later on the price was decreased by 25% due to reduction in sales. Find the net percentage change in final price of article.

Ex: Gaurav spends 30% o of his monthly income on food articles, 40% of the remaining on conveyance and Clothes and saves 50% of the remaining. If his monthly salary 18400, how much money does he save every month?

(a) 3624

(b) 3864

(c) 4264

(d) 5888

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Formula 6

Ex: The population of a town increases by 5% every year. If the present population is 9261 , the population 3 yr ago was