If the imports in 2008 was Rs. 250 crores and the total exports in the years 2008 and 2009 together was Rs. 500 crores, then the imports in 2009 was-

Answer: Option D

Let the value of export in 2008 be Rs. $$x$$ crores
Then, the value of export in 2009 = Rs. (500 - $$x$$) crores
$$\begin{array}{rl}& \frac{250}{x}=1.25\\ & \Rightarrow x=\frac{250}{1.25}\\ & \Rightarrow x=\frac{250\times 100}{125}\\ & \Rightarrow x=200\end{array}$$
∴ Export in 2008 = Rs. 200 crores
Export in 2009
  = Rs. (500 - 200) crores
  = Rs. 300 crores
Let the value of import in 2009 be Rs. $$y$$ crores
Then,
$$\begin{array}{rl}& \frac{y}{300}=1.40\\ & \Rightarrow y=1.40\times 300\\ & \Rightarrow y=\frac{140}{100}\times 300\\ & \Rightarrow y=420\end{array}$$
Hence, the value of import in 2009 was Rs. 420 crores