The average of 3 consecutive even numbers is 18, find the largest of these…

2024

The average of 3 consecutive even numbers is 18, find the largest of these numbers.

  1. A.

    11

  2. B.

    12

  3. C.

    20

  4. D.

    22

Attempted by 46 students.

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Correct answer: C

Step-by-Step Solution

  1. Define the numbers: Let the three consecutive even numbers be x, x + 2, and x + 4.

  2. Use the Average Formula: The average of a set of numbers is the sum of the numbers divided by the count.

    • Average = (x + (x + 2) + (x + 4)) / 3 = 18.

  3. Solve for x:

    • (3x + 6) / 3 = 18

    • 3x + 6 = 54

    • 3x = 48

    • x = 16.

  4. Find the largest number: The largest number is (x + 4).

    • 16 + 4 = 20.

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