At 14 55, Henry left Town L for Town M, driving at a speed of 70 km/h. At 17 55, Nick also left Town L for Town M driving at a certain speed. Both of them did not change their speed throughout the journey. At 20 55, both of them passed a bakery that was 210 km away from Town M. How many minutes earlier did Nick reach Town M than Henry?

Distance that Henry travelled
= 6 x 70
= 420 km

Distance between Town L and Town M
= 420 + 210
= 630 km

Since Nick passed the bakery at the same time as Henry, it means that Nick travelled 420 km in 3 hours.

Nick's speed during the journey
= 420 ÷ 3
= 140 km/h

Duration that Nick took to reach Town M after passing the bakery
= 210 ÷ 140
= 1.5 h

Duration that Henry took to reach Town M after passing the bakery
= 210 ÷ 70
= 3 h

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

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

Nick reached Town M 90 minutes earlier than Henry.

Answer(s): 90 min