11. There are 40 boys in class VIII and their average age is 14 years. Also, there
are 35 boys in class IX and their average age is 15 years. Find the average
age of both the classes.
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Answer:
the average age of the boys is 14, because there are 40 boys 8th and 35 boys in 11th. the majority is 8th and their age is 14 years.
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