exam
Maths Puzzle
Numerical Ability
The length of a rectangle is 10 in. more than twice its width. If the perimeter of the rectangle is 32 in., find the width of the rectangle.
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Solve.
Suppose that the cost C, in dollars, of producing x items is given by
C= 2x squared - 20x +3500. How many items can be produced for $9500?
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A triangular sail has an area of x^2 + 5x + 6 square meters and a height of x + 3 meters. Find the length of the sail's base.