1. **Problem Statement:** Calculate Maria's weekly salary, total earnings with overtime, and net annual salary after tax. 2. **Part A i:** Maria earns 12 per hour and works 38 hours. Salary = hourly rate \times hours worked $$12 \times 38 = 456$$ So, Maria's weekly salary is 456. 3. **Part A ii:** Overtime pay is 1.5 times hourly rate for 10 hours. Overtime hourly rate = $12 \times 1.5 = 18$ Overtime pay = $18 \times 10 = 180$ Total earnings = regular pay + overtime pay $$456 + 180 = 636$$ Maria's total earnings with overtime are 636. 4. **Part A iii:** Annual salary is 50000. Tax brackets: - 0% for first 10000 - 10% for next 20000 - 20% for remaining amount Calculate tax: Tax on first 10000 = $0$ Tax on next 20000 = $0.10 \times 20000 = 2000$ Remaining amount = $50000 - 10000 - 20000 = 20000$ Tax on remaining = $0.20 \times 20000 = 4000$ Total tax = $0 + 2000 + 4000 = 6000$ Net salary = $50000 - 6000 = 44000$ Maria's net annual salary after tax is 44000.