Answer:
Using formula:

As per the statement:
Ravi is driving 440 miles to visit his grandma. if he drives at an average rate of 55 miles per hour.
⇒Speed = 55 miles/hour and Distance = 440 miles.
We have to find how many hours will it take him to get 3/4 of the way there.
Distance to get 3/4 of the way there=
miles.
Substitute the given values we have;

Simplify:
Time = 6 hours.
Therefore, 6 hours will it take him to get 3/4 of the way there