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Maths Puzzle
Numerical Ability
how many liters of water must be added to 8 liters of a 40 percent acid solution to obtain a 10 percent acid solution?
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book Other Question
How do I find the complex solution to the quadratic equations.
x^2 + 6x + 10 = 0
Solution A is 12% acid and Solution B is 4% acid. If a technician wants to mix them to make 60 liters of Solution C which is 10% acid, how many liters of each should be mixed toget