dahyun1 dahyun1

12-09-2021
Mathematics

contestada

Rachel and Marc drive to work.
Rachel drives 90 miles in 1.25 hours.
Marc drives 244 km in 2 hour 30 min.
Work out the difference between their average speeds in km/h.
1 mile = 1.6 km

Respuesta :

jcherry99 jcherry99

12-09-2021

Answer:

Step-by-step explanation:

Rachel

d = 90 miles.

d = 90 * 1.6 km = 144 km

t = 1.25 hours.

Average speed = d/ time

Average speed = 144/ 1.25 = 115.2

Marc

d = 244 km

t = 2hr 30 minutes

30 minutes = 1/2 hour = 0.5 hours

Average speed = 244 km / 2.5 hours

Average speed = 97.6

Difference

Difference = Rachel - Marc

Difference = 115.2 - 97.6

Difference = 17.6

Answer Link

eshaahmed1000 eshaahmed1000

23-01-2022

Answer:

17.6 km/h

Step-by-step explanation:

Answer Link

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