请看图回答．（1）公交车从A站到D站，若再用同样的速度从D站到A站，共 分．（2）A站到D站的路程是 千米．（3）A站到D站的平均速度是 千米/小时．
直接写出得数．÷6= 15÷=×=÷= 42×=﹣60%= 10﹣99%= 40%×=
直接写出得数． 24×= 1÷=×12=×18÷3=÷=（﹣）×=×÷×=
直接写得数．============
直接写得数．×=×12=×=÷=÷= 9×=÷═÷12=
直接写得数．=== 3.2÷40%=====
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