An Industrial plant bought a generator set for P20,000, Other expenses including installation amounted to P10,000. The generator is to have 17 years with a Salvage valuc at the end of life of P5,000. Determine the book value at the end of 12 years by the following method;

Declining balance method

a. P10,118 b. P12 068 c. P14,393 d. P8,483

Sinking fund method at 12%

a. P45,529 b. P59 860 c. P53,100 d P65,896