t1=5 t2=3 vp=3.8 v-?
Путь одинаковый S=v*t
(v-vp)*t1=(v+vp)*t2
v=vp*(t1+t2)/(t1-t2)=3.8*(5+3)/(5-3)=15.2 км/ч
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t1=5 t2=3 vp=3.8 v-?
Путь одинаковый S=v*t
(v-vp)*t1=(v+vp)*t2
v=vp*(t1+t2)/(t1-t2)=3.8*(5+3)/(5-3)=15.2 км/ч