1、378/4-378/4.5=10.5(千米) 2、(10-1.2*5)/0.2=20(张) 10.08/X=5.6 x=10.08/5.6=1.8 3.4x=5.032 x=5.032/4=1.258 X-10.08=7.5 x=7.5+10.08=17.58 9.31+X=101.5 x=101.5-9.31=92.19
1.378/4-378/4.5=94.5-84=10.5千米每小时 2.(10-1.2*5)/0.2=20 10.08/X=5.6 x=10.08/5.6=1.8 3.4xX=5.032 x=5.032/3.4=1048 X-10.08=7.5 x=7.5+10.08=17.58 9.31+X=101.5 x=101.5-9.31=92.19
10.5千米/小时
(10-1.2*5)/0.2=20 推得10.08/X=5.6 x=10.08/5.6=1.8 3.4xX=5.032 x=5.032/3.4=1048 X-10.08=7.5 x=7.5+10.08=17.58 9.31+X=101.5 x=101.5-9.31=92.19