please answer a and b, provide with your steps I will give you a like

1. An analyst gathers the following data. Stock XB splits three-for-one during the period. Stock ZA YC XB Beginning of Period Price ($) Shares 30 100,000 60 25,000 120 2,000 End of Period Price ($) Shares 48 100,000 63 25,000 52 6,000 a. Calculate the returns on the price-weighted index of three stocks over the period. b. Calculate the returns on the market value-weighted index of three stocks over the period. c. Explain the difference in returns between the two indexes. (10 marks)