Problema Solution
How much of a 10% alcohol solution should be added to 2 cups of a 20% alcohol solution to make a 12% solution?
Answer provided by our tutors
Let
x = cups of 10% alcohol solution
0.10x + 0.20*2 = 0.12(x + 2)
........
click here to see the equation solved for x
........
x = 8 cups
8 cups of 10% alcohol solution are needed to make a 12% solution.