Problema Solution
Pure acid is to be added to a 5% acid solution to obtain 95L of 60% solution. What amounts of each should be used?
Answer provided by our tutors
Let
x = the amount of 5% acid solution
y = the amount of 100% (pure) acid
x + y = 95
0.05x + 1*y = 0.60*95
........
click here to see the system of equations solved for x and y
........
x = 40 L
y = 55 L
40 liters of 5% acid solution and 55 liters of pure acid should be used.