At 12 55, Ian left Town X for Town Y, driving at a speed of 69 km/h. At 14 55, Bryan also left Town X for Town Y driving at a certain speed. Both of them did not change their speed throughout the journey. At 16 55, both of them passed a mosque that was 207 km away from Town Y. How many minutes earlier did Bryan reach Town Y than Ian?

Distance that Ian travelled
= 4 x 69
= 276 km

Distance between Town X and Town Y
= 276 + 207
= 483 km

Since Bryan passed the mosque at the same time as Ian, 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 Y after passing the mosque
= 207 ÷ 138
= 1.5 h

Duration that Ian took to reach Town Y after passing the mosque
= 207 ÷ 69
= 3 h

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

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

Bryan reached Town Y 90 minutes earlier than Ian.

Answer(s): 90 min