College Algebra CLEP Prep Practice Exam

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The length of a rectangular field is twice its width. If the area of the field is 900m, what is the width?

  1. 30m

  2. 45m

  3. 60m

  4. 75m

The correct answer is: 45m

To solve this question, we need to understand that the formula for the area of a rectangle is length times width. In this case, we are given that the length is twice the width, or L = 2W. We are also given that the area is 900m, so we can set up an equation L * W = 900. Substituting 2W for L, we get: 2W * W = 900. Simplifying, we get 2W^2 = 900. To solve for W, we can divide both sides by 2, giving us W^2 = 450. Taking the square root of both sides, we get W = √450, which is approximately 21.2m. Therefore, B is the correct answer, as the width is approximately 21.2m. The other options are incorrect because

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