exam Maths Puzzle Numerical Ability

How many liters of water must be added to 5 liters of a 30% acid solution to obtain a 20% acid solution?

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exam Other Question

4b-5=negative t solve for b A rectangle surmounted by an equilateral triangle. If the height of the rectangle is 3 meters less than a side of the triangle, and the perimeter of the figure is 34 meters, determine the length of a side of the triangle.