Question : The average of 24 numbers is 43. If we subtract a number ' M ' from each number, then the average becomes 38. What was the value of M?
Option 1: 12
Option 2: 5
Option 3: 7
Option 4: 10
Correct Answer: 5
Solution :
Given: The average of 24 numbers is 43.
If we subtract a number ' M ' from each number, then the new average = (43 – M)
According to the question,
(43 – M) = 38
⇒ M = 43 – 38 = 5
Therefore, the value of M = 5
Hence, the correct answer is 5.
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