SOLUTION: John has 50 liters of a 10% peroxide solution. How many liters of a 60% peroxide solution should he add to get a 28% peroxide solution ?

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Question 302678: John has 50 liters of a 10% peroxide solution. How many liters of a 60% peroxide
solution should he add to get a 28% peroxide solution ?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let X be the number of liters of 60% solution.
10%2850%29%2B60%28X%29=28%2850%2BX%29
500%2B60X=1400%2B28X
32X=900
X=225%2F8
28 and 1/8 liters of 60% solution are required.