5. On January 2, 2000 the Gonzalo Corporation purchases an automatic soldering machine for $18,000. The corporation plans to transfer the machine to subsidiary at the end of 2005 for $11,000. Determine the life of the machine so that the book value at the end of 2005 will be P11,000 if the salvage value after years should be 4,000 using: a) straight-line method (10 pts.) b) double declining balance method (10 pts.) 6. A newly-built business property, containing space for a store and two offices, can be purchased for P1, 200,000. A prospective buyer estimates that during the next 10 years he can obtain annual rentals of at least P458, 460 from the property and that the annual out-of-pocket disbursements will not exceed P60, 000. He