Use the following chain base index numbers (C.B.I.) to obtain the fixed base index numbers

Question: Use the following chain base index numbers (C.B.I.) to obtain the fixed base index numbers

Year: 1978 1979 1980 1981 1982 1983
Chain Base Index: 105 75 71 105 95 90

Solution:

First, need to convert chain base index numbers (C.B.I.) to fixed base index (F.B.I.) for which the following formula is applicable.

Computation of fixed bas index numers