Question
For the following data, use the weighted average of price relative method to construct the index number for theyear 2010, taking the year 2005 as the base year.
| Commodity | Weight (W) | Price in $2005\left( P _0\right)$ | Price in $2007\left( P _1\right)$ |
| E | 15 | 22 | 30 |
| F | 12 | 15 | 18 |
| G | 8 | 17 | 20 |
| H | 17 | 12 | 15 |
| I | 20 | 25 | 32 |