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Ai hoc gioi ly giup minh vs
e bai la
|:luc 6h mot nguoi di xe dap xuat fat tu A ve B vs van toc v1=12km/h.Sau do 2h, mot nguoi di bo tu B ve A vs van toc v2=4km/h. Biet AB=48km/h.
a.Hai nguoi gap nhau luc may gio? Noi gap nhau cach A bao nhieu km?
b.Neu nguoi di xe dap sau khi di duoc 2h roi nghi 1h thi hai nguoi gap nhau luc may gio? Noi gap nhau cach A bao nhieu km?
Giup mink vs nha! Cam on nhiu!![Stick Out Tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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:-*
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>-Lưu ý viết dấu
a.Hai nguoi gap nhau luc may gio? Noi gap nhau cach A bao nhieu km?
b.Neu nguoi di xe dap sau khi di duoc 2h roi nghi 1h thi hai nguoi gap nhau luc may gio? Noi gap nhau cach A bao nhieu km?
Giup mink vs nha! Cam on nhiu!
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