Question
The average age of (x + 2) members in a committee is 22
years. When a 44-year-old chairman joins, the average age rises to 23 years. Find x% of 500.Solution
Total age = 22(x + 2)
According to question,
[22(x + 2) + 44] = 23(x + 2 + 1)
22x + 44 + 44 = 23x + 69
23x - 22x = 88 - 69
x = 19
So, 19% of 500 = 95
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