The mean of five numbers is . Four of the numbers are . What is the fifth number?

Answer and explanation

Correct answer: A. 27

  1. Step 1: Find the total sum of all five numbers by multiplying the mean by : .
  2. Step 2: Add the four given numbers: .
  3. Step 3: Subtract this subtotal from the required total to determine the fifth number: .
Answer
27.

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