6. Radiant Engineers Ltd has two machines doing the same job. Due to improved processing and manufacturing, the company is in a position to sell one of the machines. Machine X needs repairing costing $10,000 to be operative for next three years. Its annual operating costs are expected to be *12,500 and it could be sold for *8,000 after 3 years. Its market value today is 20,000. Machine Yhas a market value of $45,000 today and *10,000 after 8 years. Its annual operating costs are *9,000 and would require repairs costing $12,000 after 3 years. The book values of Machines X and Y are 12,000 and 24,000 respectively. Assume that depreciation is charged on straight-line basis for computing tax. The tax rate is 45 per cent and the required rate of return is 10 per cent. Which machine should be sold?