The average distance between the target and the impact point of the shell is:
(40*0+30* 1+20*3+ 10*7+0*39)/50
= 3.2 meters
The average distance between the target and the impact point of shell B is:
(40* 1+30*3+20*2+ 10*3+0*4 1)/50
= 4 (m)
Because 3.2 < 4
Therefore, the average distance between the impact point of the projectile and the target is very small.
Therefore, the accuracy of armored gun is better.
Jiangsu Wu Yunchao wishes you academic progress.