Question

100 trees were planted along one side of straight road. the trees were planted 9m apart. what is distance between the first and last trees

Answer 1

By using the sum of ap

First term is 1 and comman difference is 9 and last term 100

Distance is 5050m

Answer 2

No of trees planted = 100
The distance between one tree to the next tree = 9m
The distance between the first tree and the last tree = 100 x 9m
= 900m
I hope it helps