Question: Using simple Aggregate method obtain index numbers for 1990 taking 1988 as the base year from the following data
Commodities | A | B | C | D | E |
1988 | 100 | 80 | 160 | 220 | 40 |
1990 | 140 | 120 | 180 | 240 | 40 |
Solution:
Computing Index number (Simple Aggregate Method)

Which shows a net increase of 20% in the price of commodities in the year 1990 as compared to 1988.