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Two positive numbers add to 57, and their difference is 11. What is the smaller number?

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Question: Two positive numbers add to 57, and their difference is 11. What is the smaller number?

  1. 24
  2. 22
  3. 25
  4. 23

Correct Answer: D — 23

Explanation: With a sum S and difference D, the smaller number is (S − D)/2.
(57 − 11) ÷ 2 = 23. This is the requested value.

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