At 11 50, Fabian left Town K for Town L, driving at a speed of 64 km/h. At 13 50, George also left Town K for Town L driving at a certain speed. Both of them did not change their speed throughout the journey. At 15 50, both of them passed a cinema that was 192 km away from Town L. How many minutes earlier did George reach Town L than Fabian?
Duration that Fabian travelled from 11 50 to 15 50 = 4 h
Distance that Fabian travelled
= 4 x 64
= 256 km
Distance between Town K and Town L
= 256 + 192
= 448 km
Since George passed the cinema at the same time as Fabian, it means that George travelled 256 km in 2 hours.
George's speed during the journey
= 256 ÷ 2
= 128 km/h
Duration that George took to reach Town L after passing the cinema
= 192 ÷ 128
= 1.5 h
Duration that Fabian took to reach Town L after passing the cinema
= 192 ÷ 64
= 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
George reached Town L 90 minutes earlier than Fabian.
Answer(s): 90 min
