At 14 10, Neave left Town L for Town M, driving at a speed of 78 km/h. At 15 10, George also left Town L for Town M driving at a certain speed. Both of them did not change their speed throughout the journey. At 18 10, both of them passed a boutique that was 156 km away from Town M. How many minutes earlier did George reach Town M than Neave?

Distance that Neave travelled
= 4 x 78
= 312 km

Distance between Town L and Town M
= 312 + 156
= 468 km

Since George passed the boutique at the same time as Neave, it means that George travelled 312 km in 3 hours.

George's speed during the journey
= 312 ÷ 3
= 104 km/h

Duration that George took to reach Town M after passing the boutique
= 156 ÷ 104
= 1.5 h

Duration that Neave took to reach Town M after passing the boutique
= 156 ÷ 78
= 2 h

Difference between the time they took to reach Town M
= 2 - 1.5
= 0.5 h

1 h = 60 min
0.5 h = 0.5 x 60 = 30 min

George reached Town M 30 minutes earlier than Neave.

Answer(s): 30 min