At 11 40, Ivan left Town F for Town G, driving at a speed of 69 km/h. At 13 40, Flynn also left Town F for Town G driving at a certain speed. Both of them did not change their speed throughout the journey. At 16 40, both of them passed a library that was 207 km away from Town G. How many minutes earlier did Flynn reach Town G than Ivan?

Distance that Ivan travelled
= 5 x 69
= 345 km

Distance between Town F and Town G
= 345 + 207
= 552 km

Since Flynn passed the library at the same time as Ivan, it means that Flynn travelled 345 km in 3 hours.

Flynn's speed during the journey
= 345 ÷ 3
= 115 km/h

Duration that Flynn took to reach Town G after passing the library
= 207 ÷ 115
= 1.8 h

Duration that Ivan took to reach Town G after passing the library
= 207 ÷ 69
= 3 h

Difference between the time they took to reach Town G
= 3 - 1.8
= 1.2 h

1 h = 60 min
1.2 h = 1.2 x 60 = 72 min

Flynn reached Town G 72 minutes earlier than Ivan.

Answer(s): 72 min