(a) Mr. Robert started a business. During January 2020, the following transactions occurred: January 1: Service provided to a customer but not yet received Tk 60,000 January 2: Purchased a delivery van on account Tk. 50.000 January 5: Earned revenue Tk. 35,000 of which Tk 10,000 is collected in cash and the balance was dae in January January 9: Incurred interest expenses for the month on ao account Tk. 5,000 January 12: Received Tk. 10,000 in cash related to the transaction January 5. January 14. Received Tk. 20,000 in cash from the customer by providing services. January 15: Paid salary for the month Tk. 9,000 in cash January 17: Paid Tk. 15.000 to account payable for the delivery van. Required: Give journal entries for the month of January, 2020 (b) A company is considering an investment proposal to install a new machine at a cost of Tk 50,000. The estimated cash flows from the investment proposal are as follows- Year 2 3 4 5 CEAT Cash Flow Adiusted Time in Ik. 10,000 10.450 11,800 12.250 16,750 Reaniced: Determine- 0) Pay Back Period Net Present Value (NPV) at 10% cost of capital