1. **State the problem:** Greg fills his mug and pours it into jug A three times, and Martin fills his mug and pours it into jug B six times. We need to find how many more millilitres Martin's mug holds compared to Greg's. 2. **Identify the volumes in the jugs:** From the problem, jug A is filled to approximately 800 millilitres after Greg's 3 pours. 3. **Calculate Greg's mug volume:** Since Greg poured 3 times to reach 800 ml, Greg's mug volume is $$\frac{800}{3} \approx 266.67\text{ ml}$$. 4. **Identify the volume in jug B:** Jug B is filled to approximately 2500 millilitres after Martin's 6 pours. 5. **Calculate Martin's mug volume:** Since Martin poured 6 times to reach 2500 ml, Martin's mug volume is $$\frac{2500}{6} \approx 416.67\text{ ml}$$. 6. **Find the difference:** The difference in mug volumes is $$416.67 - 266.67 = 150\text{ ml}$$. **Final answer:** Martin's mug holds 150 millilitres more than Greg's.