Answer: what do you need help with
Explanation: you never posted a problem
The answer is B when you subtract every like term
250=100%
25=10%
12.5=5%
2.5=1%
25*8=200(80%)
12.5+2.5=15(6%)
200+12=215(86%)
250+200=450(186%)
so 450ml is your answer
Hope this helped :)
I think you are missing part of the problem. If you had another equation or a value for x you could solve it.