At 11 25, Rael left Town T for Town U, driving at a speed of 75 km/h. At 13 25, Cody also left Town T for Town U driving at a certain speed. Both of them did not change their speed throughout the journey. At 16 25, both of them passed a grocery store that was 150 km away from Town U. How many minutes earlier did Cody reach Town U than Rael?
Duration that Rael travelled from 11 25 to 16 25 = 5 h
Distance that Rael travelled
= 5 x 75
= 375 km
Distance between Town T and Town U
= 375 + 150
= 525 km
Since Cody passed the grocery store at the same time as Rael, it means that Cody travelled 375 km in 3 hours.
Cody's speed during the journey
= 375 ÷ 3
= 125 km/h
Duration that Cody took to reach Town U after passing the grocery store
= 150 ÷ 125
= 1.2 h
Duration that Rael took to reach Town U after passing the grocery store
= 150 ÷ 75
= 2 h
Difference between the time they took to reach Town U
= 2 - 1.2
= 0.8 h
1 h = 60 min
0.8 h = 0.8 x 60 = 48 min
Cody reached Town U 48 minutes earlier than Rael.
Answer(s): 48 min