Expenditure of company B in 2006 was 90% of its expenditure in 2005. Income of Company B in 2006 was what percent of its income in 2005?

Let expenditure of company B in 2005 = Rs. x; then
I₁(Income) = x + 35/100 x = Rs. 27x/20
Since . expenditure of company B in 2006 = 90/100 x Rs. x = Rs. 9x/10.then
I₂(Income ) = 9x/10 + 45/100 x 9x/10 = 9x/10 +81x/200 = Rs. 261x/200
Hence, required percentage = 261x/200/27x20 x 100 = 290/3 = 96²/₃%