Answer: 12 hours
Step-by-step explanation: Since, the vehicles are moving towards each others and will meet at a certain point, at the same time so we consider the time period 't' for both the vehicles.
we know, speed = distance/ time , distance= speed*time.
therefore, 65t km+ 62t km = 1524 km
127t= 1524
t = 1524/ 127 = 12 hours.