The answer is 4/0 or indefinite.
Please see the attached picture for full solution
Hope it helps
Good luck on your assignment
If you're looking for the decimal it is
0.71428571428
Answer:
4 liters of 5% and 16 liters of 17.5%
Step-by-step explanation:
Let quantity of 5% be x liters and of 17.5% be y liters
x+y=20 hence y=20-x
Introducing percentages
0.05x+0.175(20-x)=0.15*20
0.05x+3.5-0.175x=3
-0.125x=-0.5
![x=\frac {-0.5}{-0.125}=4](https://tex.z-dn.net/?f=x%3D%5Cfrac%20%7B-0.5%7D%7B-0.125%7D%3D4)
Therefore, y=20-x=20-4=16
You need 4 liters of 5% and 16 liters of 17.5% to achieve 20 liters of 15% acid solution