Please answer each part of this question using detailed steps and I will submit them soon, thanks for your help!

Assume you are considering two investments A and B on the following cash flows: At what cost of capital does your preference for one investment change to the other investment? Present your answer in percentage to 2 decimal places (including the % symbol), e.g. 2.34\% for a positive rate, or -1.23\% for a negative rate (25\% marks will be deducted if the % symbol is not provided)