Let the total number of shares for the month of August 2007 be x and the total profit earned in that month be Rs. Y. 

The Overall profit =y/x = Rs. 6 per share.

We need to find the profit earned by selling one share of Reliance

i.e. profit share earned by selling reliance shares/Number of shares of reliance

= = Rs.5.46 Hence (a).

Alternately:

Let the number of shares be 100, hence the total profit is Rs. 600

From the chart, the number of shares of Reliance= 35

profit % from Relaince=32% of 600

Profit /Share= (32% of 600)/35 = 5.5