please help me in these two questions

Q.3 An equipment has been purchased for a project to be completed in 6 years. The initial cost of equipment (6) was Rs. 7,500,000. It is estimated that the used equipment can be sold in auction at a price of Rs. 1,200,000 after completion of the project. The expected/planned yearly usage of the equipment is as follows: Year auAWN- Equipment Usage (Hours) 140 170 230 80 110 70 Develop the yearly depreciation schedule of the equipment according to: a) Sum-of-Years-Digit Method b) Units-of-production Method c) Double Declining Balance Method Q.4 The following cash flow is associated with a project under consideration in your company. Determine (8) the annual worth of the project, if the MARR for the company is 13%. $ 16,000 $ 14,000 $ 12,000 12,000 + 12,000 8,000 8,000 8,000 6,000 10 000 $4.000 0 3 2 4 5 6 7 8 10 11 12 13 $ 4,000 $ 11,000 $ 50,000