At 12 25, Ryan left Town D for Town E, driving at a speed of 69 km/h. At 14 25, Tom also left Town D for Town E driving at a certain speed. Both of them did not change their speed throughout the journey. At 17 25, both of them passed a cafe that was 207 km away from Town E. How many minutes earlier did Tom reach Town E than Ryan?
Duration that Ryan travelled from 12 25 to 17 25 = 5 h
Distance that Ryan travelled
= 5 x 69
= 345 km
Distance between Town D and Town E
= 345 + 207
= 552 km
Since Tom passed the cafe at the same time as Ryan, it means that Tom travelled 345 km in 3 hours.
Tom's speed during the journey
= 345 ÷ 3
= 115 km/h
Duration that Tom took to reach Town E after passing the cafe
= 207 ÷ 115
= 1.8 h
Duration that Ryan took to reach Town E after passing the cafe
= 207 ÷ 69
= 3 h
Difference between the time they took to reach Town E
= 3 - 1.8
= 1.2 h
1 h = 60 min
1.2 h = 1.2 x 60 = 72 min
Tom reached Town E 72 minutes earlier than Ryan.
Answer(s): 72 min