please show all the steps, thanks

Consider the three stocks in the following table. Pt represents price at time t, and Qt represents shares outstanding at time t. Stock C splits two for one in the last period. a. Calculate the rate of return on a price-weighted index of the three stocks for the first period (t=0 to t=1). (Do not round intermediate calculations. Round your answer to 2 decimal places.) b. Calculate the new divisor for the price-weighted index in year 2. (Do not round intermediate calculations. Round your answer to 2 decimal places.) c. Calculate the rate of return for the second period ( t=1 to t=2 ). (Round your answer to 2 decimal places.)