200 trees were planted at equal distance apart along the sides of a straight expressway. The

Question

distance between the first and the last tree is 396 m. What is the distance between the first and
the fifteenth tree?

Answer 1

200 trees means 199 intervals between. So, each interval is 396/199 meters. That means that the nth tree is at a distance from the first of

Tn = (n-1)(396/199)

Now just plug in 15 for n and you have your distance.

Answer 2

Thanks for your reply.Even I did the same thing but the answer is 36..