Question 1064886
This cannot be done.  There is no such "86%" saline.  There is no "46%" saline.  If you wish to ignore this and just do the arithmetic, then it can be handled like so:


x, how much volume of the 6%
6-x, how much of the 86%


{{{(6x+86(6-x))/6=46}}}


Solve for x and evaluate 6-x.