EXAMPLE 26. Given below are the average wholesale prices of four commodities, A, B, C, and D. Weight Average wholesale price Commodity % 2011 2012 2013 2014 2015 A 30 4.50 6.00 7.50 9.00 10.50 40 10.00 8.00 12.00 12.00 15.00 C 10 2.00 2.50 3.00 4.00 5.00 20 1.50 3.00 4.50 6.00 12.00 Taking 2011 as the base, calculate the price index number for 2012, 2013, 2014 and 2015 by suitable method.

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