Question

Need help in 5b (i)

Answer 1

If you are going to ask someone to look over a whole document for you, At least have the dignity to post the question.

Answer 2

5b.

fractional change = (Ls -Lo)/Lo =(Ls /Lo) -1
so than will be

Lo =50
Ls =51,6

fractional change =(51,6 -50)/50 -1 = (1,6)/50 -1 = 0,032 -1 = - 0,968

Answer 3

so but what mean this (i) there in your question ?