Answer: the answer would be 114 KM in 1 and a half hour
Step-by-step explanation: since there is no answer choice, this is only my assumption, and by assumtion i mean math calculation like 76 + 38 equals 114. 1/2 an hour john travels 38 KM's, so add it with how far john travels in 1 hour (78 KM's) and you get 114 KM's in 1 and a half hours.
