Study the following graph carefully and answer the questions given below it.
Percentage Profit/Loss = $$\frac{Income - Expenditure}{Expenditure}\times100$$
Ratio of expenditure of companies A and B in 1999 was 3 : 4. What was the ratio of their incomes in 1999 ?
Percentage profit = 100* (Income - Expenditure)/Expenditure
So, Income = E * (%P+1)
Thus, the required ratio is 3 * 1.3 : 4 * 1.4 = 39 : 56
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