Its a bit hard to read your question but it looks like its a mixture of 12% and 17% solutions forming a 14% solution.
This is essentially like a molarity question. The total volume must be ten, and the average the %s must be 14.
The answer is 4 gallons of 17% and 6 gallons of 12%
What? I don’t understand lol
The answer is C, 3200 people.
294/X= -14
Cross multiply
294= -14X
Divide both sides by -14
294 : -14 = -21
-14 gets cancelled out so the X is isolated
X= -21 or -21=X it doesn’t really matter which way you put it