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The average age of 25 men is 28 years. 5 new men of an average age of 25 years joined them. Find the average age of all the men together.1. 26.5 years2. 28.5 years3. 29.5 years4. 27.5 years |
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Answer» Correct Answer - Option 4 : 27.5 years Given: Average age of 25 men = 28 years Formula: Average = Sum of all observations/Total number of all observation Calculation: Sum of age of 25 men = 28 × 25 = 700 If 5 men of average age of 25 years joined them, then Sum of age of 5 men = 25 × 5 = 125 years Now, Sum of age of 30 men = 700 + 125 = 825 years ∴ Average age of 30 men = 825/30 = 27.5 years |
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