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 ?

Options

A. `10:13`
B. `8:13`
C. `13:14`
D. `11:14`

Answer

A

Explanation

Given that,
`("Exp. of B in"2009)/("Exp. of B in" 2010)=(5)/(7)`
`=("Income of B in" xx(100)/(140))/("Income of B in" 2010xx(100)/(130))=(5)/(7)`
`=(IB2009)/(IB2010)=(5xx140)/(7xx130)=(10)/(13)`