A reduction of 15% in the price of oil enables a house wife to obtain 4kgs more for Rs.1200, what is the reduced price for kg?
Choices
A) 43 B) 55 C) 35 D) 45 E) 40

Rationale: "1200 * ( 15 / 100 ) = 180 - - - - 4 ? - - - - 1 = > rs . 45 answer : d"
Answer: D