If the income of Company A in 2007 and that in 2008 were equal and the amount invested in 2007 was Rs12 lakh, what was the amount invested in 2008? 

 If the total amount invested by the two companies in 2009 was Rs 27 lakh, while the amount invested by Company B was 50% of the amount invested by Company A, what was the total profit earned by the two companies together? 

 If the amount invested by the two companies in 2005 was equal, what was the ratio of the total income of the Company A to that of B in 2005?

If the profit earned in 2006 by Company B was Rs 8,12,500, what was the total income of the company in that year? 

 What is the speed of the train in kmph?

Statements:

1.The train crosses an 'x' metre-long platform in 'n' seconds.

11.The length of the train is 'y' metres.

111.The train crosses a signal pole in 'm' seconds. 

Four of the following five are alike in a certain way andhence form a group. Which is the one that does not belong to the gorup?