I have attached. please explain upto 400

Purple Lid has recently undertaken a business combination with Yellow Lid. At the start of negotiations, Purple Lid owned 30% of the shares of Yellow Lid. The current discussions between the two entities concerned Purple Lid's acquisition of the remaining 70% of shares of Yellow Lid. The negotiations began on 1 January 2022 and enough shareholders in Yellow Ltd agreed to the deal by 30 September 2022. The purchase agreement was for shareholders in Yellow Ltd to receive in exchange shares in Purple Lid. Over the negotiation period, the share price of Purple Ltd shares reached a low of $5.40 and a high of $6.20. The accountant for Purple Lid, Mr Nashville, knows that AASB 3 has to be applied in accounting for business combinations. However, he is confused as to how to account for the original 30% investment in Yellow Lid, what share price to use to account for the issue of Purple Lid's shares, and how the varying dates such as the date of exchange and acquisition date will affect the accounting for the business combination. Required: In your own words, and with reference to relevant accounting standards, provide Mr Nashville with advice on the issues that are confusing him