Answer:
16 hours
Step-by-step explanation:
velocity = distance / time => distance = velocity * time;
distance = 80 m/s * 12 hours
newVelocity = 60 m/s;
newVelocity = distance / newTime => newTime = distance / newVelocity = 80 m/s * 12 hours / (60 m/s) = (8/6) * 12 hours = 16 hours
