1. **Problem:** Solve $3.6 + 2.4 \div 0.6 - 1.25$ using the order of operations. 2. **Formula and rules:** According to the order of operations (PEMDAS/BODMAS), division and multiplication are performed before addition and subtraction. 3. **Step-by-step solution:** - First, perform the division: $$2.4 \div 0.6 = 4$$ - Substitute back: $$3.6 + 4 - 1.25$$ - Perform addition and subtraction from left to right: $$3.6 + 4 = 7.6$$ $$7.6 - 1.25 = 6.35$$ 4. **Answer:** $$\boxed{6.35}$$