Along a yard 255 metres long, 18 trees are palnted at equal distances, one tree being at each end of the yard. What is the distance between two consecutive trees	Options:
A) 18
B) 15
C) 10
D) 11
E) 12

Rationale: "explanation : 18 trees have 17 gaps between them , required distance ( 281 / 17 ) = 15 option b"
Answer: B