The average age of 50 teachers of a school is 66 years and the average age of 60 teachers of another school is 55 years. What will be average age of teachers of both the schools together?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 60 years.
| Understanding/Application |
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Average = Sum of age of all members/Total members Sum of age of all members of school 1 = 50(66) = 3300 Sum of age of all members of school 2 = 60(55) = 3300 Total age of both groups = 6600 Total members of both groups = 50 + 60 = 110 |
| Average = 6600/110 = 60 |