Tong van toc cua hai xe la :
105 + 45 = 150 ( km/gio )
Sau so gio hai xe gap nhau la :
300 : 150 = 2 ( gio )
D/S : 2 gio
Minh cung khong chac lam, dung thi
nho **** cho minh day. Hi hi !!!!!!!!!!!!!!!!
tong van toc 2 xe:105+45=150km/gio
thoi gian 2 xe gap nhau la:300:150=2gio
dap so:2gio