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Study the following table and answer the questions that follow. “Graph”If the incomes of two companies were equal in 2009, then what was the ratio of expenditure of Company X to that of Company Y in 2009 ?
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By: anil on 05 May 2019 01.35 am
In 2009, let the income of company X = z Let the income of company Y = z Let expenditure of company X = x Profit % of company X = 50% => $$frac{z-x}{x}$$*100 = 50 => 2z - 2x = x => x = $$frac{2z}{3}$$ Let expenditure of company Y = y Profit % of company Y = 60% => $$frac{z-y}{y}$$*100 = 60 => 5z - 5y = 3y => y = $$frac{5z}{8}$$ Ratio of expenditure of company X to that of Y => $$frac{x}{y}$$ = $$frac{2z/3}{5z/8}$$ = $$frac{2*8}{3*5}$$ = 16:15
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