the summer camps had field from the campus to fragrance hill. they traveled at an average speed of 65 km/h in the first 2 hours.
after that they traveled at another average speed of 78 km/h if the distance between the campus and fragrance hill is 364 km, what was the total time for a field trip
so if they traveled an average speed of 65 km/h then that means they traveled 130 km (2*65). Then the remaining distance to travel will be 364-130, or 234 km. If you travel at 78 km /h, then it will take you 234/78, or 3 more hours to reach Fragrance Hill. Add 2 and 3 to get a total of 5 hours
