Answer:
3.45 hours. The closest answer option to this value would be (10/3), which is technically 3.3333 hours, but it is the closest correct option, by far. 3.333 hours would suggest the distance was 250 miles, not 259 (250/75) = 3.33333)
Explanation:
Distance, D, is found by multiplying the speed (75 mph) times the time, x (in hours. If distance is 259 miles, we can write:
259 miles = (75 miles/hr)*x
Rearrange to find x [divide both sides by (75 miles/hr):
x = (259 miles/(75 miles/hr)
Note the units: miles cancel and hours moves to the top, leaving only hours, which is what we want.
(259 hours)/75 = 3.45 hours