please help solve

Consider the three stocks in the following table. Pt represents price at time t and Qt represents shares outstanding at time t Stock splits two-for-one in the last period. Required: 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. What wil be the divisor for the price-weighted index in year 2? (Do not round intermediote calculations. Round your answer to 2 decimal places.) c. Calculate the rate of return of the price:weighted index for the socond period (t=1 to t=2)