Part B (10 marks) Muronga Ltd supplied the following details regarding a contract that was still in progress at the end of the accounting period ended 29 February 2019: Contract price N$ 100 000 Cost to date N$60 000 Estimated costs to completion N$12 000 Sales value of work certified N$75 000 Cost of certified work N$50 000 N$7 500 Retention amount Required: Mark Calculate the amount of profit on this contract that may be transferred to the profit and loss account for the past accounting period, using each of the following methods: 3.3 The work certified method 3.4 The percentage of completion method Total