A trader sells 85 meters of cloth for Rs. 8500 at the profit of Rs. 15 per metre of cloth. What is the cost price of one metre of cloth?	Choose the correct choice from the following choices:
A) rs . 80  B) rs . 85  C) rs . 90  D) rs . 95  E) none of these

Rationale: "sp of 1 m of cloth = 8500 / 85 = rs . 105 cp of 1 m of cloth = sp of 1 m of cloth - profit on 1 m of cloth = rs . 100 - rs . 15 = rs . 85 . answer : b"
Answer: B