1. The following information has been compiled about a group of commodities: 1990 2002 Commodity Price Quantity Price Quantity Bread (loaf) 50.80 2000 $1.40 3600 Milk (litre) 50.90 600 $1.20 800 Butter (kg) $3.60 400 $4.80 300 a) Compute simple price, quantity, and value indexes for each of the commodities listed. b) Compute an unweighted aggregate price index for the group of commodities, c) Compute weighted aggregate price, quantity, and value indexes for the group of commodities