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)

Okay, because 18% of 16 is 2.88, we can cross off C. and D. as an option.

Now, because it is a 27% acid solution of an unknown amount, B. is not correct because it says 0.21x, rather than 0.27x. Knowing this, we can safely say that The answer is Option A

answerthe vertex form

step-by-step explanation:

i did it myself and i got 4.2 (b) hope its right

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