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In a shopping mall with a staff of 5 members the average age is 45 years. After 5 years a person joined them and the...
Solution
Present average age of the 5 members = 45 yearsAverage age of the 5 members after 5 years = 45 + 5 = 50 yearsSum of the ages of the 5...
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Keynote
If the average age of N members is = MThen, the average age of N members after P years = M + PThe average age of the 5 members after 5 years is = 50...
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