Bob the archaeologist is in the desert, 10 km from a long, straight road and 45 km from base camp. the base camp is also 10 km from the road, on the same side of the road as bob is. on the road, his car can do 50 kph, but in the desert sands, it can manage only 30 kph. bob wants to get back to base camp as soon as possible. how long will the trip take? if anyone of you kind users could aid me in explaining this question and me solve, i would really appreciate it! also i am not sure why it says middle school, i am a highschool student. in advance!