1. **State the problem:** Calculate the total gross income the Travel Agency earned from the Bangkok transaction using the given exchange rate. 2. **Identify components and income mechanisms:** - Airfare net cost: PHP 36,000 - Airfare income: 15% professional fee (Cost-Plus) - Hotel accommodation net cost: USD 160 - Hotel income: 20% commission (Rate-Minus) - Exchange rate: USD 1 = PHP 56 3. **Calculate income from airfare:** The agency charges a 15% professional fee on PHP 36,000. $$\text{Airfare income} = 0.15 \times 36000 = 5400$$ 4. **Convert hotel net cost to PHP:** $$\text{Hotel net cost in PHP} = 160 \times 56 = 8960$$ 5. **Calculate income from hotel accommodation:** The agency receives 20% commission on the hotel net cost. $$\text{Hotel income} = 0.20 \times 8960 = 1792$$ 6. **Calculate total gross income:** $$\text{Total income} = 5400 + 1792 = 7192$$ 7. **Compare with option selected:** The option PHP 7,420.00 is close but the calculated total gross income is PHP 7,192.00. **Final answer:** The total gross income earned by the Travel Agency is **PHP 7,192.00**.