Consider the three stocks in the following table. pt represents price at time t, and et represents shares outstanding at time t. Stock splits two for one in the last perlod. Calculate the first-perlod rates of return on the following indexes of the three stocks ( t=0 to t=1 ): (Do not round Intermedlate calculations. Round your answers to 2 decimal places.) a. A market-value-weighted index. b. An equally weighted index