[
  "Find the truck's speed: 10% slower than 80 km/h.",
  "Both vehicles travel from 9 a.m. to 11.30 a.m. That is 2.5 hours.",
  "Car: 80 x 2.5 = 200 km from X. Truck: 72 x 2.5 = 180 km from Y."
]