At 10 40, Ryan left Town K for Town L, driving at a speed of 90 km/h. At 13 40, Fabian 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 40, both of them passed a hospital that was 270 km away from Town L. How many minutes earlier did Fabian reach Town L than Ryan?

Distance that Ryan travelled
= 6 x 90
= 540 km

Distance between Town K and Town L
= 540 + 270
= 810 km

Since Fabian passed the hospital at the same time as Ryan, it means that Fabian travelled 540 km in 3 hours.

Fabian's speed during the journey
= 540 ÷ 3
= 180 km/h

Duration that Fabian took to reach Town L after passing the hospital
= 270 ÷ 180
= 1.5 h

Duration that Ryan took to reach Town L after passing the hospital
= 270 ÷ 90
= 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

Fabian reached Town L 90 minutes earlier than Ryan.

Answer(s): 90 min