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Maths Puzzle
Numerical Ability
Solution A is 10% alcohol, solution B is 60% alcohol.How much of each is needed to make 50 liters of a solution that is 30% alcohol?
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book Other Question
two fifths the cube of a number.
Can you help me find the GCF of this and solve it?:
8d^3 + 4d^2 + 12d