The string $$12$$ meters long is cut into $$6$$ pieces of length $$2\text{m}$$.  The sum of the lengths of any $$4$$ of these pieces is $$4\times2\text{m}=8\text{m}$$. 
A string $$12$$ meters long is cut into $$6$$ pieces of equal length.  What is the sum of the lengths of any $$4$$ of these pieces? 
Options:
1) $$2\text{m}$$ 
2) $$4\text{m}$$ 
3) $$6\text{m}$$ 
4) $$8\text{m}$$ 