At 10 35, Charlie left Town U for Town V, driving at a speed of 72 km/h. At 13 35, Julian also left Town U for Town V driving at a certain speed. Both of them did not change their speed throughout the journey. At 15 35, both of them passed a boutique that was 288 km away from Town V. How many minutes earlier did Julian reach Town V than Charlie?

Distance that Charlie travelled
= 5 x 72
= 360 km

Distance between Town U and Town V
= 360 + 288
= 648 km

Since Julian passed the boutique at the same time as Charlie, it means that Julian travelled 360 km in 2 hours.

Julian's speed during the journey
= 360 ÷ 2
= 180 km/h

Duration that Julian took to reach Town V after passing the boutique
= 288 ÷ 180
= 1.6 h

Duration that Charlie took to reach Town V after passing the boutique
= 288 ÷ 72
= 4 h

Difference between the time they took to reach Town V
= 4 - 1.6
= 2.4 h

1 h = 60 min
2.4 h = 2.4 x 60 = 144 min

Julian reached Town V 144 minutes earlier than Charlie.

Answer(s): 144 min