253) A machine with useful life of 7 years cost Rs.10,000 while another machine with useful life of 5 yrs costs Rs.8,000. The 1st machine saves labour expenses of Rs.1,900 annually and the second one saves labour expenses of Rs.2,200 annually. Determine the preferred course of action. Assume cost of borrowing as 10% compounded p.a. [Decision, PV of cost savings]