Question

Marie mixes 16 liters of 18% acid solution with a 27% acid solution which results in 21% acid solution.

Let x represent the number of liters of 27% solution used. Which equation can be used to find the number of liters of 27% acid solution in the mixture?



A.


2.88 + 0.21x = 0.27(x + 16)


B.


2.88 + 0.27x = 0.21(x + 16)


C.


4.32 + 0.21x = 0.27(x + 16)


D.


3.36 + 0.27x = 0.18(x + 16)