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Instructions
Study the following graph carefully to answer the question that follow:
Percent profit made by two companies over the years
$$Per cent Profit =\frac{Income-Expenditure}{Expenditure}\times100$$
Question 129
If the year 2008 the income of both the companies A and B was the same what was the respective ratio of expenditure of Company A to the expenditure of Company B in that year ?
Solution
Let expenditures of a,b be a,b we have,
50=(i-a)/a*100, 30=(i-b)/b*100 We have,
a=(2/3)*i, b=10*i/13 we get a/b as 13/15
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