Consider the following information on the stock market in a small economy.

Company Shares Outstanding Price, beginning of year Price, end of year

1 100 $150 $145

2 1000 $25 $28

3 10,000 $13 $11

a. Compute a price-weighted stock price index for the beginning of the year and the end of the year. What is the percentage change? The percentage change is %.

b. Compute a value-weighted stock price index for the beginning of the year and the end of the year. What is the percentage change? The percentage change is %.