quãng đường ab dài 60km cung luc 1 o to may xuat phat tu a va 1 xe may xuat phat tu b cung chieu ve c van toc o to la 50km/h van toc xe may la 30km/h . hoi saubao lau o to duoi kip xe may
có ai muốn tick k olamf đi
quãng đường ab dài 30 km .1 ô tô xuất phát từ a và 1 xe máy xuat phat tu b cung luc va di cung chieu ve phia c . van toc o to la 50 km /gio. van toc xe may la 30 km.gio . hoi sau may gio thi o to duoi kip xe may
Mot o to xuat phat tu A qua B de den C.Cung luc do mot xe may cung xuat phat tu B den C. Sau 3 gio 48 phut thi o to duoi kip xe may tai C. Biet quang duong AB dai 102,6 km va van toc cua o to bang 5/3 van toc xe may. Tinh van toc o to
1,luc 7h mot nguoi di tu a voi van toc 40km/h,den 7h30 mot nguoi khac di tu a den b voi van toc 55km/h.hoi den may gio thi 2 nguoi gap nhau?
2,luc 7h mot nguoi di xe may tu a den b voi van toc 40km/h,cung luc do mot nguoi khac di o to tu b ve a voi van toc 45km/gio.hoi xe may gap o to luc may h biet quang duong ab dai 127,5km?
3,mot o to xuat phat tu a di qua b de di den c ,cung luc do mot xe may xuat phat tu b cung di den c.sau 2 gio 48 phut thi o to duoi kip xe may tai c,biet quang duong ab dai 102,6km va van toc cua o to bang 5/3 van toc cua xe may.tinh van toc cua o to?
4,quang duong ab dai 120km.luc 5h sang,mot o to di tu a den b mat 2h30phut.mot xe may cung di tu a den b voi van toc bang 2/5 van toc cua o to va xuat phat cung luc voi o to.hoi xe may den b sau o to bao lau?
Mot o to xuat phat tu A den B roi den C voi van toc 46 km/ gio cung luc do mot nguoi di xe may xuat phat tu B den C voi van toc 35 km/gio.biet quang duong AB dai 33 km hoi sau may gio o to duoi kip xe may
mot o to xuat phat tu A qua B de den C cung luc do mot xe may cung xuat phat tu B de den C sau 3 gio 48 phut thi o to duoi kip xe may tai C biet quang duong AB dai 102,6 km va van toc cua o to bang 5/3 van toc cua xe may tinh van toc cua o to
mot o to va xe may xuat phat cung 1 luc tu a den b .Quang duong ab dai 90 km .Hoi o to den truoc xe may bao lau biet thoi gian di la 1.5 gio va van toc o to gap 2 lan van toc xe may
mot o to va mot xe may cung xuat phat di tu a de den b .biet quang duong ab dai 150 km ,van toc cua o to la 50km/gio con van toc cua xe may la 40km / gio .hoi o to den b thi xe may cach b bao nhieu km?
mot o to xuat phat tu a di qua b de di den c .Cung luc do mot xe may xuat phat tu b cung di den c .Sau 3 gio 48 phut thi o to duoi kip xe may tai c .Biet quang duong ab dai 102,6km va van toc cua o to bang 5/3 van toc xe may .Tinh van toc cua o to