A fruit seller sells mangoes at the rate of Rs.13 per kg and thereby loses 25%. At what price per kg, he should have sold them to make a profit of 15%?
Choose the correct answer:
A) rs . 11.81
B) rs . 19.93
C) rs . 12.25
D) rs . 12.31
E) none

Rationale: "solution 75 : 13 = 115 : x x = ( 13 ã — 115 / 75 ) = rs . 19.93 hence , s . p per kg = rs . 19.93 answer b"
Answer: B