At school, the maximum number of students that can be in a classroom is 21. If there are 16 students signed up for the geometry
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Answer:
Georgina should add 3 liters of 49% citric acid solution.
Step-by-step explanation:
let x be the liters of 49% solution that Georgina should add. Then after she has added 0.5 liters of water, the total liters of solution she has will be
and 42% of this should be the solute:
and since adding water does not add any solvent, this amount must come from the 49% citric acid solution; therefore
Solving for we get:
This the amount of 49% citric acid solution Georgina must add.