Answer:
t = 14.1 hours
Explanation:
Given information: r = 45.9 m/h and d = 647.19 m.
The given formula is

where d is the distance in miles, r is the rate, and t is the time in hours.
We need to find the value of t for the given data.
Substitute r = 45.9 and d = 647.19 in above formula.

Divide both sides by 45.9 to find the value of t.


Therefore the value of t is 14.1 hours for r = 45.9 m/h and d = 647.19 m.