$6.$ Calculate the carrying amount and the tax base of the following assets and liabilities at $30$ June $2024$ using the following table $($for each part, briefly explain, either showing your workings or providing a written explanation, how you determined the tax base$)$:

Account Carrying amount Taxable amount Deductible amount Tax base

i$.$ In July $2023,$ the company capitalised $$750000$ incurred in designing improved hearing aids. Expenditure on research and development is deductible in full for tax purposes when paid but amortised over five years for accounting purposes.

ii$.$ Borrowing costs associated with financing land held for resale have been capitalised. The borrowing costs paid in June $2024$ amounted to $$50000$ and will be expensed for accounting purposes when the land is sold.

iii. The closing balance of the Allowance for doubtful debts at $1$ July $2024$ was $$7500,$ after accruing a further $$4500$ and writing off $$6000$ as bad debts during the year ended $30$ June $2024.$ Accounts receivable at $30$ June $2023$ was $$213000$ and the balance at $30$ June $2024$ was $$250000.$ Prepare the Allowance for doubtful debts T account.

iv$.$ The opening balance of the prepaid insurance at $1$ July $2023$ is $$30000.$ The annual premium of $$144000$ was paid in March $2024,$ with $$138000$ expensed during the year ended $30$ June $2024.$ Prepare the Prepaid insurance T account.