At 11 20, Harry left Town D for Town E, driving at a speed of 65 km/h. At 13 20, Justin also left Town D for Town E driving at a certain speed. Both of them did not change their speed throughout the journey. At 15 20, both of them passed a mosque that was 195 km away from Town E. How many minutes earlier did Justin reach Town E than Harry?

Distance that Harry travelled
= 4 x 65
= 260 km

Distance between Town D and Town E
= 260 + 195
= 455 km

Since Justin passed the mosque at the same time as Harry, it means that Justin travelled 260 km in 2 hours.

Justin's speed during the journey
= 260 ÷ 2
= 130 km/h

Duration that Justin took to reach Town E after passing the mosque
= 195 ÷ 130
= 1.5 h

Duration that Harry took to reach Town E after passing the mosque
= 195 ÷ 65
= 3 h

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

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

Justin reached Town E 90 minutes earlier than Harry.

Answer(s): 90 min