Two passenger trains start at the same hour in the day from two different stations and move towards each other at the rate of 16 kmph and 21 kmph respectively. When they meet, it is found that one train has travelled 60 km more than the other one. The distance between the two stations is?
Choose the correct choice from the following choices.
A) 222 km B) 333 km C) 555 km D) 444 km E) 666 km

Rationale: d 444 km 1 h - - - - - 5 ? - - - - - - 60 12 h rs = 16 + 21 = 37 t = 12 d = 37 * 12 = 444
Answer: D