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Maths Puzzle
Numerical Ability
7/x+4 - 1/2 = 3/x+4
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A flower bed is in the shape of a rectangle. Its length is twice its width. The bed is surrounded by a walkway 4 feet wide. If the area of the walkway is exactly twice the area of the bed, find the dimensions of the bed.
Evaluate the series if it converges.
9 + 27/4 + 81/16 + 243/64