Answer:
225 ml
Step-by-step explanation:
The problem is basically asking you to make a proportion as shown below:
1 part disinfectant / 8 parts water = 25 ml disinfectant / x ml water
This means when you solve for x, you'll get x=200 ml water (because 25*8=1*x)
Thus, 200+25=225, so the total volume was 225 ml.
