ISEE Mathematics Achievement Question 301: Answer and Explanation

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Question: 301

1. At a charity fund-raiser, 200 people each donated x dollars. In terms of x, what was the total number of dollars that was donated?

  • A.
  • B. 200x
  • C.
  • D. 200 + x

Correct Answer: B

Explanation:

B This is a Plugging In question because there are variables in the choices and the question stem contains the phrase in terms of. Plug In a value, work through the problem to find a target answer, and then check each of the choices to see which yields the target answer. For instance, Plug In x = $3. The question asks for the total amount of money donated, so 3 × 200 = 600. $600 is the target answer. Now, plug 3 into the choices for x to see which choice matches your target answer (600). Eliminate (A) because is way too small. Choice (B) works because 200(3) = 600. Eliminate (C) because is too small. Eliminate (D) because 200 + 3 or 203 ≠ 600. The correct answer is (B).

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