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Question : The average of 20 numbers is 32. If two numbers are 29 and 31, then what is the average of the remaining numbers (correct up to two decimals)?

Option 1: 31.24

Option 2: 30.22

Option 3: 34.44

Option 4: 32.22


Team Careers360 10th Jan, 2024
Answer (1)
Team Careers360 18th Jan, 2024

Correct Answer: 32.22


Solution : Given
An average of 20 numbers = 32
Total of 32 numbers = 20 × 32 = 640
After removing 29 and 31 new total = 640 – (29 + 31) = 640 – 60 = 580
$\therefore$ New average = $\frac{580}{18}=32.22$
Hence, the correct answer is 32.22.

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