At 11 25, Cody left Town D for Town E, driving at a speed of 87 km/h. At 14 25, Julian 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 salon that was 261 km away from Town E. How many minutes earlier did Julian reach Town E than Cody?
Duration that Cody travelled from 11 25 to 17 25 = 6 h
Distance that Cody travelled
= 6 x 87
= 522 km
Distance between Town D and Town E
= 522 + 261
= 783 km
Since Julian passed the salon at the same time as Cody, it means that Julian travelled 522 km in 3 hours.
Julian's speed during the journey
= 522 ÷ 3
= 174 km/h
Duration that Julian took to reach Town E after passing the salon
= 261 ÷ 174
= 1.5 h
Duration that Cody took to reach Town E after passing the salon
= 261 ÷ 87
= 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
Julian reached Town E 90 minutes earlier than Cody.
Answer(s): 90 min