XYZ stock price and dividend history are as follows. An investor buys six shares of XYZ at the beginning of 2018, buys another two shares at the beginning of 2019 , sells one share at the beginning of 2020 , and sells all seven remaining shares at the beginning of 2021 Required: 0. What are the arithmetic and geometric average time-weighted rates of retum for the investor? (Do not round intermediote calculations. Round your answers to 2 decimal places.) b-1. Prepare a chart of cash flows for the four dates corresponding to the turns of the year for January 1,2018, to fanuary 1,2021. (Negative omounts should be indicoted by o minus sign.)