Two ships are can only unload their cargo during high tide due to a shallow harbor. It is LOW tide at a harbor at 9:00 am.
After the first ship unloads, the tide is already going out and the second ship must wait for the next high tide. At what time will the second ship be able to unload?
a
The shallow harbor is too dangerous, and he should turn away and leave.
b
He must wait until around 3:00 pm the next day.
c
He must wait until 9:00 pm.
d
He must wait until 12 hours have passed from the time the first ship unloaded.