exam Maths Puzzle Numerical Ability

(x² -4x -5)/(x² +2x +1) ÷ (x -5)/(x +4)

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How do you write an algebraic equation for the English statement? A man at ground level measures the angle of elevation to the top of a building to be 53 degrees. If, at this point, he is 12 feet from the building, what is the height of the buil