how do i solve for these? thank you!

ACTIVITY A . During 2018 AWW company incurred the following expenses related to the travel of its officers and employees: . Foreign travel of officers and employees ( Plane ticket, Meals and Lodging : for attending training and seminars P 1,500,000 . Domestic travel of employees related to business 400,000 . Travel expenses of the spouse of the vice president . of finance 125,000 . Required: Compute the allowable deduction for travel expenses ACTIVITY B . During 2020 the total net amount paid for salaried and wages amounted to P 16,000,000 after the following deduction: . SSS employees contributions P 800,000 . PAG IBIG contributions 300,000 . Philhealth employee contribution 160,000 . Withholding tax 540,000 . In addition the Lotus Company its manager P 600.000 cash as fringe benefits . Required : Compute the allowable salary deduction ACTIVITY C . Mr. Marco Gamboa widow with three qualified dependent children; Anica 19. Andrew is 17 and Kris 10 years old . Annual Salary P 1,700,000 . Allowance received from employer 300,000 . Gross sales from his restaurant business 6,000,000 . Cost of sales 3,000,000 . Itemized business allowable expenses-total 460.000 . Required: Determine the net taxable income using the optional standard deduction