3. An index consists of the following securities and prices: BART LISA MAG # of Shares 5,000 2,000 3,000 Po $20 $75 $40 Pi $25 $70 $42 $22 $80 $49 Compute the return if the index is value-weighted, equally-weighted, and price-weighted (assume the divisor is 3 for price-weighted) for the periods 0 to 1 and 1 to 2