please solve both parts

Consider the three stocks in the following table. Pt represents price at time t, and Qt represents shares outstanding at time t. Stock C spilis two-for-one in the last period. Required: Calculate the first period rates of retum on the following indexes of the three stocks: (Do not round intermediate calculations. Roun your answers to 2 decimal places.) a. A maknct value-weighted index b. An equaly weighted index