Answer:
260 miles per day.
Step-by-step explanation:
We have to calculate the unit rate for 780 miles in 3 days.
We can solve this question by unitary method.
∵ In 3 days = 780 miles
∴ In 1 day = [tex]\frac{780}{3}[/tex]
= 260 miles.
260 miles per day.