At 14 20, Tim left Town E for Town F, driving at a speed of 79 km/h. At 17 20, Dylan also left Town E for Town F driving at a certain speed. Both of them did not change their speed throughout the journey. At 20 20, both of them passed a hypermart that was 237 km away from Town F. How many minutes earlier did Dylan reach Town F than Tim?

Distance that Tim travelled
= 6 x 79
= 474 km

Distance between Town E and Town F
= 474 + 237
= 711 km

Since Dylan passed the hypermart at the same time as Tim, it means that Dylan travelled 474 km in 3 hours.

Dylan's speed during the journey
= 474 ÷ 3
= 158 km/h

Duration that Dylan took to reach Town F after passing the hypermart
= 237 ÷ 158
= 1.5 h

Duration that Tim took to reach Town F after passing the hypermart
= 237 ÷ 79
= 3 h

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

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

Dylan reached Town F 90 minutes earlier than Tim.

Answer(s): 90 min