Answer :
Let's find the remaining distance they must travel.
Total distance-distance covered
150-60=90 mi
Now, we need to find the average speed they need to travel per hour to reach the destination in 2.5 (2 1/2) hours.
90 mi/2.5 h=36 mi/h
They must travel at an average speed of 36mph to reach their destination in 2 1/2 hours.
Check:
60+36(2.5)
=120 mi
Total distance-distance covered
150-60=90 mi
Now, we need to find the average speed they need to travel per hour to reach the destination in 2.5 (2 1/2) hours.
90 mi/2.5 h=36 mi/h
They must travel at an average speed of 36mph to reach their destination in 2 1/2 hours.
Check:
60+36(2.5)
=120 mi
Answer:
150 -60 = 90
2.5 hrs - 1 hr = 1.5
So 90÷1.5= 60mph
Step-by-step explanation:
rate = (150-60*1)/(2.5-1) = 90/1.5 = 90/(3/2) = 60 mph