Car: 80 km/h from Town X to Town Y.<br>
Truck: 10% slower = 80 &times; 0.9 = 72 km/h from Town Y to Town X.<br><br>
Travel time from 9 a.m. to 11.30 a.m. = 2.5 hours.<br><br>
Distance car travelled from Town X = 80 &times; 2.5 = 200 km.<br>
Distance truck travelled from Town Y = 72 &times; 2.5 = 180 km.<br><br>
They met 200 km from Town X.<br>
Check: combined distance = 200 + 180 = 380 km. &check;<br><br>
Final Answer: A: 200 km from Town X