At 11 35, Ben left Town B for Town C, driving at a speed of 65 km/h. At 13 35, Ryan also left Town B for Town C driving at a certain speed. Both of them did not change their speed throughout the journey. At 15 35, both of them passed a farm that was 195 km away from Town C. How many minutes earlier did Ryan reach Town C than Ben?
Duration that Ben travelled from 11 35 to 15 35 = 4 h
Distance that Ben travelled
= 4 x 65
= 260 km
Distance between Town B and Town C
= 260 + 195
= 455 km
Since Ryan passed the farm at the same time as Ben, it means that Ryan travelled 260 km in 2 hours.
Ryan's speed during the journey
= 260 ÷ 2
= 130 km/h
Duration that Ryan took to reach Town C after passing the farm
= 195 ÷ 130
= 1.5 h
Duration that Ben took to reach Town C after passing the farm
= 195 ÷ 65
= 3 h
Difference between the time they took to reach Town C
= 3 - 1.5
= 1.5 h
1 h = 60 min
1.5 h = 1.5 x 60 = 90 min
Ryan reached Town C 90 minutes earlier than Ben.
Answer(s): 90 min
