(2*60+3*60*1.5+x)/6=70
(120+3*90+x)=420
420-120-270=x
x=30
x*0.1+y*0.05=x*0.05+0.1y
x=y
A包里的硬币数是x+y
B包里的硬币数也是x+y
A+B=2x+2y=4x
4x如果等于30的话 x就不是整数了
所以不可能
1.In a group of six people,two have a mass of 60kg while thr
1个回答
相关问题
-
alcohol of mass 0.5kg in a glass container of mass 0.4kg is
-
a group of people 与the group of people的区别
-
of the six people injured in the crash ,only two survived.
-
1.A moon of mass 8.89E22 kg orbits a planet of mass 8.53E24
-
a group of people\ a basket of apples+are,
-
A group of students in Japan have created a realistic robot
-
In Fig.13-41,a particle of mass m1 = 0.24 kg is a distance d
-
We have a lot of homework to do today. So we need two or thr
-
a mass of 怎么用还有masses of
-
a golfball has a mass of 150g,calculate its increase in mass