A reduction of 30% in the price of oil enables a house wife to obtain 6kgs more for Rs.940, what is the reduced price for kg?	Pick one
A) 72  B) 47  C) 40  D) 28  E) 20

Rationale: "940 * ( 30 / 100 ) = 282 - - - - 6 ? - - - - 1 = > rs . 47 answer : b"
Answer: B