Required:

$($a$)$ Calculate the cost of the machinery. Explain whether or not each item should be capitalised with reference to AASB.

$($b$)$ Show all journal entries in relation to the machinery purchase, depreciation, revaluation and disposal for the years ended $30$ June $2024$ to $30$ September $2026.$ Indicate any revaluation gain or loss with P$+$L or OCI and show closing entries of gain or loss to the asset revaluation surplus account. All workings must be clearly shown.