The following table shows the price and volume of shares (in thousands) traded for ABC Company and XYZ Company in the first 10 weeks of 1991.

Compute the market-value-weighted index using week 1 as the base.

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Week 1 2 3 4 56 9 7 8 9 10 ABC Company Price 12 100 mloo ni100 1100 11 13 12 -100 13- 143 N100 00 133 14 -1000 11000 100 14 133 Volume 3.8 2.9 3.2 3.1 3.5 4.1 3.9 4.4 4.1 4.3 XYZ Company Price 25/ 24/ Noo in 100 inloo enloo-loo enloo 100-100 24 26//2 26/ 25 27/ 27 28/ 29- Volume 6.4 7.1 6.9 7.4 7.7 6.9 7.4 6.8 7.2 7.4