Please show step-by-step calculation with explanation

Boman is a company whose activities are in the field of bridge construction. During the year ended 30 September 2017, the company entered into three contracts to build bridges. The following information relates to these contracts at 30 September 2017: Required: a) Show how each contract would be reflected in the Statement of Profit or Loss of Boman for the year ended 30 September 2017 under IFRS 15. ( 3% marks) b) Show how each contract would be reflected in the Statement of Financial Position of Boman at 30 September 2017 under IFRS 15. (7 1/2 marks) c) If a contract cannot be reliably estimated, explain how it is reported in the statement of Comprehensive Income for that year. (1/2 marks)