Problema Solution
A photographer wants to mix 14 liters of a 9% acetic acid solution with a 16% solution to get a 13% solution. How many liters of 16% solution must be added?
Answer provided by our tutors
let 'x' represent the liter of 16% solution, x>0
0.09*14 + 0.16x = 0.13(14 + x)
by solving we find:
x = 18.67 L
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18.67 liters of 16% solution must be added.