Multiple choice

Average of n numbers is X. If 36 is decreased from two numbers, the new average becomes (x - 8). What is the value of n?

  1. 2

  2. 4

  3. 6

  4. 8

  5. 9
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

When total of n numbers decreases by 72 (36 from two numbers), the average decreases by 8. Using the formula: Total decrease = n × (decrease in average). Therefore: 72 = n × 8, which gives n = 9. The correct answer is 9, which corresponds to option E. Options A, B, C, and D are all incorrect.

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