White Ltd acquired an item of machinery on 1 July 2012 for $500,000. The machinery has a useful life of 10 years and a zero residual value. The machinery is depreciated using the straight-line method and is measured using the cost model. In relation to the item of machinery, indicators of impairment have been identified for the reporting period ended 30 June 2014 while indicators for a reversal of impairment have been identified for the reporting period ended 30 June 2015. The fair value less costs of disposal and the value in use of the machinery on these dates were: Date Value in use Fair value less costs of disposal $380,000 $350,000 30 June 2014 30 June 2015 $375,000 $353,500 Required (a) Provide any necessary journal entries related to the impairment of the item of machinery on 30 June 2014 and 30 June 2015. (b) Define 'fair value less costs of disposal' and 'value in use'. (c) Explain and calculate the ceiling beyond which the carrying amount of the machine cannot be increased on 30 June 2015 when reversing the impairment loss. (d) What would White Ltd do if the recoverable amount of the machine could not be determined because the machine worked interdependently with other assets in White Ltd's factory to manufacture products that generated cash flows