Answer:
9.16 minutes per mile
At 10 miles, she is short of her intended rate
Step-by-step explanation:
2 hours means 60 * 2 = 120 minutes
Randy aims to run 13.1 miles in 120 minutes. So to get the rate [min/mi], we must divide total minutes by total miles:
120/13.1 = 9.16 minutes per mile
Moreover, she realized at 10 miles, she has taken 90 minutes. So her rate at that point [min/mi] is:
90/10 = 9 min/mi
Well, Randy is short of her intended rate
Answer:
Step-by-step explanation:
Randy wants to run half a marathon that is 13.1 miles long.
She wants to run the race in 2 hours.
1 hour = 60 minutes
2 hours = 60 × 2 = 120 minutes
speed rate (minutes per mile) = [tex]\frac{time}{distance}[/tex]
= [tex]\frac{120}{13.1}[/tex]
= 9.16 minutes per mile
She should run each mile in 9.16 minutes.
At the 10 mile mark, Randy realizes that her total running time is 90 minutes.
whereas she was prepared to complete 10 miles in (9.16 × 10) = 91.6 minutes.
So Randy has been faster than her intended pace.
