P7-07 (N.B. a televisions 1979. It is es sears, scrap v sorking hours of E. Board, October 1981) company purchased machinery for P100.000 on July 1, e estimated that it will have a useful life of ten on value of P4,000, production of 400,000 units and is of 120,000. The company uses the machinery for rs in 1979 and 18,000 hours in 1980. The machinery 6.000 units in 1979 and 44,000 units in 1980. Com- preciation for 1980 using each method given below. a) Straight-line method produces 36,000 pute the deprecia (b) Working hours (v) Output method