At 12 50, Owen left Town F for Town G, driving at a speed of 82 km/h. At 14 50, Tommy also left Town F for Town G driving at a certain speed. Both of them did not change their speed throughout the journey. At 16 50, both of them passed a school that was 246 km away from Town G. How many minutes earlier did Tommy reach Town G than Owen?

Distance that Owen travelled
= 4 x 82
= 328 km

Distance between Town F and Town G
= 328 + 246
= 574 km

Since Tommy passed the school at the same time as Owen, it means that Tommy travelled 328 km in 2 hours.

Tommy's speed during the journey
= 328 ÷ 2
= 164 km/h

Duration that Tommy took to reach Town G after passing the school
= 246 ÷ 164
= 1.5 h

Duration that Owen took to reach Town G after passing the school
= 246 ÷ 82
= 3 h

Difference between the time they took to reach Town G
= 3 - 1.5
= 1.5 h

1 h = 60 min
1.5 h = 1.5 x 60 = 90 min

Tommy reached Town G 90 minutes earlier than Owen.

Answer(s): 90 min