A watch was sold at a loss of 46%. If it was sold for Rs.140 more, there would have been a gain of 4%. What is the cost price? Choose the correct choice from the following options: A) 280 B) 288 C) 279 D) 277 E) 290

Rationale: "54 % 104 % - - - - - - - - 50 % - - - - 140 100 % - - - - ? = > rs . 280 answer : a"
Answer: A