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Let n ounces of a 15% acid solution be mixed with m ounces of a 55% salt solution.
Which of the following are possible salt concentrations of the mixture? (Select all that apply.)
10% - impossible
40% - possible, depending on "n" and "m"
45% - possible, depending on "n" and "m"
50% - possible, depending on "n" and "m"
85% - impossible
The recipe is: Only values in between 15% and 55% are achievable.