3. Suppose an employee works 10 hours on a regular holiday, 8 hours on a rest day and another 10 hours on an ordinary day, how much will the employee be paid if his rate is Php 110 hour and he worked for 6 days during the week and he only worked the required 8 hours for the 3 regular days? 4. A university professor who has a basic monthly salary of Php80.000, a living allowance of Php2,000 per month, who also has an investment of Php500,000 which ears an interest of 6% per year. How much is his annual gross income? 5. Suppose the university professor has to pay each year Php245,880 for income tax Php12,000 for Philhealth, Php 1,200 for Pag-ibig and Php86,400 for GSIS contributions, then what is his net annual income