exam Maths Puzzle Numerical Ability

Mix a solution that is 50% acid with a solution that is 100% water to make 4L of a solution that is 10% acid. How much of each solution do you use?

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exam Other Question

find the 47th term of the arithmetic sequence. ___, ___, ___, 35, __, ___, ___, ___, 51, ___,

What is the common difference? How did you find it? What are the missing terms. W I need to evaluate 120(0.05)(3.5