A man buy a book in Rs50 & sale it Rs60. What is the rate of profit ???
Pick:  A) 10%  B) 20%  C) 30%  D) 25%  E) 28%
cp=50   sp=60   profit=60-50= 
<gadget id="calculator">60-50</gadget>
<output>10</output>
10   %=10/50*100= 
<gadget id="calculator">10/50*100</gadget>
<output>20</output>
20%   ANSWER:20%
<result>B</result>
A man buy a book in Rs50 & sale it Rs60. What is the rate of profit ???