Based on the following information regarding prices for a sample of stocks.

a$.$ Construct a price$-$weighted index for these three stocks, and compute the percentage change in the index for the period from T to T $+1.$

b$.$ Construct a value$-$weighted index for these three stocks, and compute the percentage change in the index for the period from T to T $+1.$

c$.$ Construct an equal$-$weighted index by assuming $$1,000$ is invested in each stock. What is the percentage change in wealth for this portfolio?