A greyhound coach leaves its terminal every 45 minutes. If the first coach leaves the terminal at 6:45 am, at what time will the fifth coach leave the terminal ?IKMC Grade 1 - 2
( Cứ cách nhau 45 phút có 1 chuyến xe Geyhound rời bến. Nếu chuyến xe đầu tiên rời bến lúc 6 giờ 45 phút sáng, vậy chuyến xe thứ năm rời bến lúc nào ?
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