1. **State the problem:** Calculate the total gross income the Travel Agency earned from a Singapore family transaction using the given costs and income mechanisms. 2. **Given data:** - Airfare net cost: PHP 100,000 - Hotel accommodation net cost: USD 360 - City tour net cost: PHP 8,000 - Passport assistance fee: PHP 2,500 per child (assume 1 child since not specified) - Exchange rate: USD 1 = PHP 56.00 3. **Formulas and rules:** - Cost-Plus professional fee: Income = Net Cost \times Fee Percentage - Rate-Minus commission: Income = Net Cost \times Commission Percentage - Markup: Income = Net Cost \times Markup Percentage - Service fee: Fixed amount per child 4. **Calculate each component's income:** **Airfare income:** $$\text{Income} = 100,000 \times 0.12 = 12,000$$ PHP **Hotel accommodation income:** Convert USD to PHP: $$360 \times 56 = 20,160$$ PHP Commission income: $$20,160 \times 0.18 = 3,628.80$$ PHP **City tour income:** Markup income: $$8,000 \times 0.25 = 2,000$$ PHP **Passport assistance income:** Assuming 1 child: $$2,500 \times 1 = 2,500$$ PHP 5. **Total gross income:** $$12,000 + 3,628.80 + 2,000 + 2,500 = 20,128.80$$ PHP 6. **Check answer choices:** Closest to PHP 20,128.80 is not listed exactly, but the closest is PHP 20,458.80 (option 1), which might consider rounding or additional child fees. **Final answer:** PHP 20,128.80 (calculated total gross income)