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
4x+7 I believe but it could be wrong
<u>(1/216)</u> is the right answer.
