At 12 30, Lee left Town K for Town L, driving at a speed of 75 km/h. At 14 30, Dylan also left Town K for Town L driving at a certain speed. Both of them did not change their speed throughout the journey. At 16 30, both of them passed a mosque that was 225 km away from Town L. How many minutes earlier did Dylan reach Town L than Lee?

Distance that Lee travelled
= 4 x 75
= 300 km

Distance between Town K and Town L
= 300 + 225
= 525 km

Since Dylan passed the mosque at the same time as Lee, it means that Dylan travelled 300 km in 2 hours.

Dylan's speed during the journey
= 300 ÷ 2
= 150 km/h

Duration that Dylan took to reach Town L after passing the mosque
= 225 ÷ 150
= 1.5 h

Duration that Lee took to reach Town L after passing the mosque
= 225 ÷ 75
= 3 h

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

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

Dylan reached Town L 90 minutes earlier than Lee.

Answer(s): 90 min