How much #90%# saline solution should we mix to #3qt.# of #15%# saline mix to make #45%# saline solution?
2 Answers
Explanation:
Let
We can then express the problem mathematically as:
Then, let's substitute the first mathematical expression in place of
Therefore, we need to mix
We need
Explanation:
Let us assume that we need to mix
It is mixed with
and on mixing the two, the total quantum of saline is
This is
hence
or
or
or
i.e.
Hence, we need