Four pupils have an average age of 12years and two other ...
Four pupils have an average age of 12years and two other pupils of average age of 10.5years are added. What is the average age of the six pupils?
10.5yrs.
11yrs.
11.5 yrs.
12yrs.
12.5yrs.
Correct answer is C
No explanation has been provided for this answer.
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