A reduction of 15% in the price of wheat enables a house wife to obtain 3 kgs more for Rs.500, what is the reduced price for kg? Choose the correct choice:
A) rs . 10
B) rs . 15
C) rs . 20
D) rs . 25
E) rs . 30

Rationale: explanation : 500 * ( 15 / 100 ) = 75 - - - - 3 ? - - - - 1 = > rs . 25 answer : d
Answer: D