Question
The average age of a group of 40 people is 22 years. If
the age of 5 people is excluded, the average age decreases by 1 year. What is the average age of the 5 excluded people?Solution
Total age of 40 people = 40 × 22 = 880 years Average age of the remaining 35 people = 21 years Total age of 35 people = 35 × 21 = 735 years Age of the 5 excluded people = 880 - 735 = 145 years Average age of the 5 excluded people = 145/5 = 29 years Correct Option: d
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