Problema Solution
you are looking to make 5L of a 30% acid cleaning solution. you have acid solutions of 20% and 45%.how much of each is needed to get 5L of 30% aid solution?
Answer provided by our tutors
Let
x = liters of the 20% solution
y = liters of the 45% solution
The new 30% solution is 5 liters means:
x + y = 5
0.20x + 0.45y = 0.30*5
........
click here to see the system of equations solved for x and y
........
x = 3 L
y = 2 L
3 liters of the 20% solution and 2 liters of the 45% solution are needed.