Problema Solution
a scientist wants to make 12 liters of a 40% hydrogen perozide solution. The solution is to be made from a combination of a 70% hydrogen peroxide solution and a 30% hydrogen peroxide solution. How many liters of each solution must be combined to make a 40% solution?
Answer provided by our tutors
0.7X+0.30(12-X)=.40*12
0.7X+3.6-.30X=4.8
0.4X=4.8-3.6
0.4X=1.2
X=1.2/.40
X=3 LITERS OF 70% SOLUTION IS USED.
12-3=9 LITERS OF 30% SOLUTION IS USED.