Problema Solution
A chemist needs to mix a solution that is 15% iodide with one that is 59% iodide to obtain 500 liters of mixture that is 29% iodide. Find the number of liters of 15% solution needed for the solution.
Answer provided by our tutors
Let
x = liters of 15% solution
500 - x = liters of 59% solution
0.15*x + 0.59(500 - x) = 0.29*500
........
click here to see the equation solved for x
........
x = 340.91 liters
340.91 liters of 15% solution are needed.