At 14 50, Glen left Town F for Town G, driving at a speed of 61 km/h. At 16 50, Albert also left Town F for Town G driving at a certain speed. Both of them did not change their speed throughout the journey. At 18 50, both of them passed a cafe that was 183 km away from Town G. How many minutes earlier did Albert reach Town G than Glen?

Distance that Glen travelled
= 4 x 61
= 244 km

Distance between Town F and Town G
= 244 + 183
= 427 km

Since Albert passed the cafe at the same time as Glen, it means that Albert travelled 244 km in 2 hours.

Albert's speed during the journey
= 244 ÷ 2
= 122 km/h

Duration that Albert took to reach Town G after passing the cafe
= 183 ÷ 122
= 1.5 h

Duration that Glen took to reach Town G after passing the cafe
= 183 ÷ 61
= 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

Albert reached Town G 90 minutes earlier than Glen.

Answer(s): 90 min