If the average of five numbers is 10 and one number 20 is removed, what is the new average?
FPSC 5 Years Past Papers Subject Wise (Solved With Details) / All — Multiple-choice practice
- A. 6.0
- B. 8.0
- C. 10.0
- D. 7.5
Correct answer
7.5
Explanation
Explanation We are given: Average of 5 numbers = 10 So, total sum of the 5 numbers = 10 × 5 = 50 Now, one number (20) is removed: New sum = 50 − 20 = 30 New number of values = 5 − 1 = 4 So, new average = 30 ÷ 4 = 7.5
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