The average of the ages of a group of 65 men is 32 years. If 5 men join the group, the average of the ages of 70 men is 34 years. Then find the average of the ages of those 5 men joined later (in years).
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e 60.
| Understanding/Application |
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The average age of 65 men = 32 years Total age of 65 men = 65(32) = 2080 The average age of 70 men after 5 new men joined = 34 years Total age of 70 men = 70(34) = 2380 |
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Total age of 5 men = 2380 - 2080 = 300 Average age of 5 men = 300/5 = 60 years |