Question 3 Answer & Explanation - SAT Algebra

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algebra

The perimeter of a rectangle is 60. The length is twice the width. What is the area?

400

200

150

100

Correct Answer: B

Choice Choice B is the correct answer.

Define: $W=w, L=2w$ .
Perimeter: $2(w + 2w) = 60 \rightarrow 6w = 60 \rightarrow w = 10$ .
Length: $20$ .
Area: $10 \times 20 = 200$ .

Choice Choice D is incorrect because calculation error.

Choice Choice A is incorrect because calculation error.

Choice Choice C is incorrect because calculation error.

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Linear Functions Set 34

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