please make it clear and with details.

Q.3) Pass Journal Entry under the following conditions where: Parent No Longer Holds an Equity Interest And Parent Maintains an Equity Interest a. On December 31, 20X9, P Ltd Investments in Q Ltd account has a balance of $75,000. P Ltd's 80% interest in Q Ltd has a fair value of $110,000. On January 1, 20X0, P Ltd sells all of its Q Ltd shares for $90,000. How should P Ltd account for this transaction? b. And if P Ltd sells half (remaining 40%) of Q Ltd's shares for $50,000. How should P Ltd account for this transaction? (1.5 marks)