At 13 10, Billy left Town T for Town U, driving at a speed of 69 km/h. At 15 10, Bryan also left Town T for Town U driving at a certain speed. Both of them did not change their speed throughout the journey. At 17 10, both of them passed a bakery that was 207 km away from Town U. How many minutes earlier did Bryan reach Town U than Billy?

Distance that Billy travelled
= 4 x 69
= 276 km

Distance between Town T and Town U
= 276 + 207
= 483 km

Since Bryan passed the bakery at the same time as Billy, it means that Bryan travelled 276 km in 2 hours.

Bryan's speed during the journey
= 276 ÷ 2
= 138 km/h

Duration that Bryan took to reach Town U after passing the bakery
= 207 ÷ 138
= 1.5 h

Duration that Billy took to reach Town U after passing the bakery
= 207 ÷ 69
= 3 h

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

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

Bryan reached Town U 90 minutes earlier than Billy.

Answer(s): 90 min