Question

Expenditure of company 'B' in years 2009 and 2010 were in the ratio of 5: 7 respectively. What was the respective ratio of their incomes ?

• A. 10 : 13
• B. 8 : 13
• C. 13 : 14
• D. 11 : 14
• E. None of these

Answer 1

The correct option is A 10 : 13

$\frac{Exp.ofBin2009}{Exp.ofBin2010}=\frac{5}{7}=\frac{IncomeofBin2009\times \frac{100}{140}}{IncomeofBin2010\times \frac{100}{130}}=\frac{5}{7}=\frac{IncomeofBin2009}{IncomeofBin2010}=\frac{5\times 140}{7\times 130}=\frac{10}{13}$