Let x be the amount of the 10% alcohol solution to use.
So, the equation becomes:
0.10x + 0.15(50 - x) = 0.12(50)
0.10x + 7.5 - 0.15x = 6
-0.05x = -1.5
x = 30
So, Bruce should use 30 ml of the 10% alcohol solution.
Therefore, he should use 20 ml of the 15% alcohol solution (50 - 30).
Bruce wants to make 50 ml of an alcohol solution with a 12% concentration. He has a 10% alcohol solution and a 15% alcohol solution. The equation 0.10x + 0.15(50 – x) = 0.12(50) can be used to find the amount of 10% alcohol solution Bruce should use.
How much of the 10% alcohol solution should Bruce use?
__________ mL
How much of the 15% alcohol solution should Bruce use?
__________ mL
1 answer