Sun City Limited commences construction of a multi-purpose water park on 1 July 2014 for Pretoria Limited. Sun City Limited signs a fixed-price contract for total revenues of $50 million. The project is expected to be completed by the end of 2017 and Pretoria Limited controls the asset throughout the period of construction. The expected cost as at the commencement of construction is $38 million. The estimated costs of a construction project might change throughout the projectin this example, they do change. The following data relates to the project (the financial years end on 30 June):

	2015 ($m)	2016 ($m)	2017($m)
Costs for the year	10	18	12
Costs incurred to date	10	28	40
Estimated costs to complete	28	12
Progress billings during the year	12	20	18
Cash collected during the year	11	19	20

Required

(a) Using the above data, compute the gross profit to be recognised for each of the three years, assuming that the outcome of the contract can be reliably estimated.

(b) Prepare the journal entries for the 2015 financial year using the percentage-of-completion method.

(c) Prepare the journal entries for the 2015 financial year, assuming the stage of completion cannot be reliably assessed.