SOLUTION: 2 solutions are to be mixed to make 50 ml. of a solution that is 16% Bromine. One solution is 10% Bromine and the other solution is 40% Bromine. How much of each solution should

Question 14264: 2 solutions are to be mixed to make 50 ml. of a solution that is 16% Bromine. One solution is 10% Bromine and the other solution is 40% Bromine. How much of each solution should be used?
Tried it but don't have the correct answer. Thanks for your help.
Answer by Alwayscheerful(414) (Show Source): You can put this solution on YOUR website!
You should start with 2 variables. "D" for dumped and "P" for poured (for the two liquids)
To solve, you need to use either substitution or elimination.
Set up your first equation.

Because you are pouring two solutions to make one of 50 mL, you can say that equation is true.
The second equation is a little tricky.
You take the percent and change it to decimals to make the second equation.

How did I get that?
Let's say the 10% bromine solution is D and the 40% solution is P
You want to mix 10% and 40% to get 16% and that 16% solution is 50 mL.
That's how I got the part
Then you put them together

You can either use substitution or elimination. For this problem, I personally think substitution is much easier.
Isolate one variable.

Move isolate the P

Plug it back in the original equation.

So your answer should be that you should use 10 mL of the 40% solution and 40 mL of the 10% solution
Hope this helps!
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