Bob travels to ocean with an average speed of 50 miles per hour 50mi/h.
The distance from the Bob's house to ocean is 350 miles.
In order to calcuale how long will Bob travel from his house to ocean, you se the following formula:
t = v x s
t: time
v: Bob's average speed = 50mi/h
s: distance Bob's house - Ocean = 350mi
By replacing you obtain:
t