Mark purchases a dozen items for $240.00. If Mark sells each item for $30.00 what is his markup%? Select:
A) 10	B) 50	C) 75	D) 100	E) 125
C.P.=240/12= 
<gadget id="calculator">240/12</gadget>
<output>20</output>
20   S.P.=30   markup%=((S.P.-C.P.)/C.P.)*100=((30-20)/20)*100= 
<gadget id="calculator">((30-20)/20)*100</gadget>
<output>50</output>
50%   ANSWER:50
<result>B</result>
Mark purchases a dozen items for $240.00. If Mark sells each item for $30.00 what is his markup%?