Please anwer. Thanks!

1. A P110,000 chemical plant had an estimated life of 6 years and a projected scrap value of P10,000. After 3 years of operation an explosion made it a total loss. How much money would have to be raised to put up a new plant costing P150,000 if a depreciation reserved have been maintained during its 3 years of operation by: (30 points) a. Straight line method b. Sinking fund method at 6% annual compound interest