Answer: 4.8 liters
Step-by-step explanation:
Let x liter of water is added with y liter of 25% beach solution.
Thus, According to the question,
x + y = 12 -------(1)
0% of x + 25 % of y = 15 % of 12
25 % of y = 15% of 12
[tex]25 y = 15\times 12[/tex]
[tex]y = \frac{180}{25}[/tex]
[tex]y = \frac{36}{5}[/tex]
Put this value in equation (1),
We get,
[tex]x + \frac{36}{5} = 12[/tex]
[tex]x = 12-\frac{36}{5}[/tex]
[tex]x =\frac{60-36}{5}[/tex]
[tex]x =\frac{24}{5}[/tex]
Therefore, the quantity of water = [tex]x =\frac{24}{5}=4.8\text{ liter}[/tex]
And, the quantity of 25% bleach solution = [tex]y =\frac{36}{5}=7.2\text{ liter}[/tex]
