设张行x Km/h,李行y Km/h.
2x=3y;
x-y=3.6;
解得x=10.8,y=7.2.
设张、李二人t时后相遇.
(10.8+7.2)t=10.8X2
解得t=1.2.
张离乙地为S1=0.8X10.8=8.64Km.李离甲地为S2=2X10.8-8.64=12.96Km.
设张行x Km/h,李行y Km/h.
2x=3y;
x-y=3.6;
解得x=10.8,y=7.2.
设张、李二人t时后相遇.
(10.8+7.2)t=10.8X2
解得t=1.2.
张离乙地为S1=0.8X10.8=8.64Km.李离甲地为S2=2X10.8-8.64=12.96Km.