A certain vent releases steam every 20 minutes. If the vent releases steam at 6:25 p.m., which of the following could be a time at which the vent releases steam?
A.9:15 p.m.
B.10:40 p.m.
C.11:00 p.m.
D.12:20 p.m.
E.1:05 a.m.
我的答案:
A certain vent releases steam every 20 minutes. If the vent releases steam at 6:25 p.m., which of the following could be a time at which the vent releases steam?