At 11 35, Bryan left Town S for Town T, driving at a speed of 67 km/h. At 14 35, Cody also left Town S for Town T driving at a certain speed. Both of them did not change their speed throughout the journey. At 17 35, both of them passed a clinic that was 201 km away from Town T. How many minutes earlier did Cody reach Town T than Bryan?
Duration that Bryan travelled from 11 35 to 17 35 = 6 h
Distance that Bryan travelled
= 6 x 67
= 402 km
Distance between Town S and Town T
= 402 + 201
= 603 km
Since Cody passed the clinic at the same time as Bryan, it means that Cody travelled 402 km in 3 hours.
Cody's speed during the journey
= 402 ÷ 3
= 134 km/h
Duration that Cody took to reach Town T after passing the clinic
= 201 ÷ 134
= 1.5 h
Duration that Bryan took to reach Town T after passing the clinic
= 201 ÷ 67
= 3 h
Difference between the time they took to reach Town T
= 3 - 1.5
= 1.5 h
1 h = 60 min
1.5 h = 1.5 x 60 = 90 min
Cody reached Town T 90 minutes earlier than Bryan.
Answer(s): 90 min