lúc 7 giờ xe khách phương trang đi từ cà mau đến cần thơ với vận tốc 45km/h; một giờ sau một xe taxi cũng xuất phát từ cà mau để đi cần thơ. hai xe gặp nhau ở thị trấn hộ phòng cách cà mau là 22,5km. biết rằng quãng đường cà mau tới cần thơ dài 180km. hỏi:
a/ xe khách phương trang cứ đi như thế thì đến cần thơ lúc mấy giờ?
b/ hai xe gặp nhau lúc mấy giờ?
c/ vận tốc của xe taxi bằng bao nhiêu km/h?
GIÚP MÌNH VỚI!!!!!
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a)Thời gian xe khách đi từ cà mau đến cần thơ là 180/45=4h
=>lúc 7+4=11h thì đến cần thơ
b) đề sai không bạn thế nào ấy
