A reduction of 20% in the price of oil enables a house wife to obtain 10 kgs more for Rs.1500, what is the reduced price for kg?	Choose the correct choice:	A) rs . 20	B) rs . 25	C) rs . 30	D) rs . 35	E) rs . 40

Rationale: "explanation : 1500 * ( 20 / 100 ) = 300 - - - - 10 ? - - - - 1 = > rs . 30 answer : c"
Answer: C