A reduction of 40% in the price of oil enables a house wife to obtain 8 kgs more for Rs.2400, what is the reduced price for kg? Choose one: A) rs . 120 B) rs . 125 C) rs . 130 D) rs . 135 E) rs . 140

Rationale: "explanation : 2400 * ( 40 / 100 ) = 960 - - - - 8 ? - - - - 1 = > rs . 120 answer : a"
Answer: A