At 14 35, Ahmad left Town V for Town W, driving at a speed of 62 km/h. At 17 35, Oscar also left Town V for Town W driving at a certain speed. Both of them did not change their speed throughout the journey. At 19 35, both of them passed a mosque that was 186 km away from Town W. How many minutes earlier did Oscar reach Town W than Ahmad?

Distance that Ahmad travelled
= 5 x 62
= 310 km

Distance between Town V and Town W
= 310 + 186
= 496 km

Since Oscar passed the mosque at the same time as Ahmad, it means that Oscar travelled 310 km in 2 hours.

Oscar's speed during the journey
= 310 ÷ 2
= 155 km/h

Duration that Oscar took to reach Town W after passing the mosque
= 186 ÷ 155
= 1.2 h

Duration that Ahmad took to reach Town W after passing the mosque
= 186 ÷ 62
= 3 h

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

1 h = 60 min
1.8 h = 1.8 x 60 = 108 min

Oscar reached Town W 108 minutes earlier than Ahmad.

Answer(s): 108 min