A book seller marks his books 50% more than the real price and allows 30% discount. His profit is: Choose the correct choice:
A) 3%
B) 4%
C) 5%
D) 6%
E) None of these
Let the CP = 100 Rs.   Mark Price = 150   Discount = 30%   Selling price 70/100 Ã— 150   Hence profit = 5%   Answer: 5%.
<result>C</result>
A book seller marks his books 50% more than the real price and allows 30% discount. His profit is: