The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is _______?
Maths / Average MCQs Math — Multiple-choice practice
- A. 27
- B. 30
- C. 35
- D. None of these
Correct answer
35
Explanation
Explanation Initially, the average of five numbers is 27, so the sum of these five numbers is: 5 x 27 = 135 If one number is excluded, the average becomes 25, which means the sum of the remaining four numbers is: 4 x 25 = 100 Now, let's find the excluded number by subtracting the sum of the remaining four numbers from the initial sum: 135 - 100 = 35 So, the excluded number is 35 .
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