if 11 oranges bought 10 r and 10 oranges sold 11 r .what is the profit  Choose the correct choice from the following options:
A) 11 %
B) 20 %
C) 22 %
D) 21 %
E) 23 %

Rationale: suppose he bought 110 apples . cp = rs 100 sp = rs 121 % profit = 100 * ( 121 - 100 ) / 100 = 21 % answer : d
Answer: D