Two classes

The average of 1 A class of 25 is 12 years, and the average age of 1B class of 22 is 10 years. What is the average age of the pupils of 1 A and 1B classes?

Final Answer:

x =  11.0638

Step-by-step explanation:

n1=25 m1=12  n2=22 m2=10  x=n1+n2n1 m1+n2 m2=25+2225 12+22 10=11.0638



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