Question
Obtain the chain base index number from the fixed base index nuimbers given below with the year $2007-08$ a the base year for the wholesale prices of machines and equipments :
year $2008-09$ $2009-10$ $2010-11$ $2011-12$ $2012-13$
Index number of machines and equipments $117.4$ $118$ $121.3$ $125.1$ $128.4$

Answer

$117.4 ; 100.51 ; 102.8 ; 103.13 ; 102.64$

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