If the income of company Q in 2001 was 10% more than that in 2000 and the company had earned a profit of 20% in 2000, then its expenditure in 2000 (in Rs. crore).

$$\eqalign{ & \text{Income of company Q in 2000} \cr & = \frac{100}{110}\times140 \cr & = \frac{400}{11}\text{ crores} \cr & \text{If expenditure in 2000 be Rs. x crores} \cr & \text{Profit %} \cr & \Rightarrow \frac{\text{Income - Expenditure}}{\text{Expenditure}}\times100=\frac{\frac{400}{11}-x}{x} \cr & \Rightarrow \frac{20}{100} = \frac{400-11x}{11x} \cr & \Rightarrow \frac{1}{5} = \frac{400-11x}{11x} \cr & \Rightarrow 5\times400-55x=11x \cr & \Rightarrow 66x = 2000 \cr & \Rightarrow x = \frac{2000}{66} \cr & \Rightarrow x = \text{Rs. 30.30 crores} \cr} $$