Answer: 11, 30
Step-by-step explanation:
Given
There were a total of 41 national battlefields and national memorials
Suppose there are [tex]x[/tex] national battlefields
So, national memorials are [tex]3x-3[/tex]
The sum of the two must be 41
[tex]\Rightarrow x+3x-3=41\\\Rightarrow 4x=44\\\Rightarrow x=11[/tex]
So, there are 11 national battlefields and [tex]3\times 11-3=30[/tex] national memorials.