At 11 10, Julian left Town T for Town U, driving at a speed of 81 km/h. At 13 10, Elijah also left Town T for Town U driving at a certain speed. Both of them did not change their speed throughout the journey. At 16 10, both of them passed a market that was 162 km away from Town U. How many minutes earlier did Elijah reach Town U than Julian?

Distance that Julian travelled
= 5 x 81
= 405 km

Distance between Town T and Town U
= 405 + 162
= 567 km

Since Elijah passed the market at the same time as Julian, it means that Elijah travelled 405 km in 3 hours.

Elijah's speed during the journey
= 405 ÷ 3
= 135 km/h

Duration that Elijah took to reach Town U after passing the market
= 162 ÷ 135
= 1.2 h

Duration that Julian took to reach Town U after passing the market
= 162 ÷ 81
= 2 h

Difference between the time they took to reach Town U
= 2 - 1.2
= 0.8 h

1 h = 60 min
0.8 h = 0.8 x 60 = 48 min

Elijah reached Town U 48 minutes earlier than Julian.

Answer(s): 48 min