Problema Solution

pure acid is to added to a 5% solution to obtain 95L of 34% solution, what amounts of each should be used

Answer provided by our tutors

let


x = L of pure 100% acid


y = L of 5% solution


we need to make 95L of 34% solution:


x + y = 95


1.00x + 0.05y = 0.34*95


by solving the above system of equations we find:


x = 29 L


y = 66 L


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29 liters of 100% pure acid and 66 liters of 5% solution should be used for the mix.