A man bought 20 shares of Rs. 50 at 5 discount, the rate of dividend being 13. The rate of interest obtained is: Choose one:
A) 12	1/2	%
B) 13 1/2%
C) 15%
D) 16 2/3%
E) None of these
Explanation:   Investment = Rs. [20 x (50 - 5)] = Rs. 900.   Face value = Rs. (50 x 20) = Rs. 1000.   Dividend = Rs.27/2 * 1000/100 =Rs. 135.   Interest obtained =(135/900 *100)= 
<gadget id="calculator">(135/900 *100)</gadget>
<output>15</output>
15%   ANSWER IS 15%
<result>C</result>
A man bought 20 shares of Rs. 50 at 5 discount, the rate of dividend being 13. The rate of interest obtained is: