RATE TIME DISTANCE
Camp to ghq 96 t+(11:46-07:32)
ghq to Camp 113 t
Total Consumed 5420.8
Total distance that each travels must be the distance between the two locations. Notice higher speed goes with lesser time. Turn the time difference of time points into a time variable expression using t.
4 hours 46-32 minutes
4 hours 14 minutes
hours
RATE TIME DISTANCE
Camp to ghq 96 t+4&7/30 96(t+4&7/30)
ghq to Camp 113 t 113*t
Total Consumed 5420.8
Solve that for t.
The slower bus had been moving for 4 hours 14 minutes; and then the faster bus began its travel and did this for t hours. The two buses pass each other t hours AFTER 11:46 - AM seemed to be implied throughout.