How best can I approach this question?
A solution containing 45% water is mixed with another solution containing 10% bromine. If the chemist needs 30 liters of the mixture, how many liters of each solution are needed to make a 34.5% water/bromine solution?
Let x= water and y= the salt solution
"If the chemist needs 30 liters of the mixture"
x + y = 30 ...is that right?