SOLUTION: in a class of 40, there are 10 boys at the age of 12 years 12 at the age of 12.5 years ant the rest at the age of 13. the average age of the boys in the class __________Years.
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-> SOLUTION: in a class of 40, there are 10 boys at the age of 12 years 12 at the age of 12.5 years ant the rest at the age of 13. the average age of the boys in the class __________Years.
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Question 696902: in a class of 40, there are 10 boys at the age of 12 years 12 at the age of 12.5 years ant the rest at the age of 13. the average age of the boys in the class __________Years. Answer by RoshanAME(1) (Show Source):
You can put this solution on YOUR website! Ages of 10 boys= 12
Ages of 12 boys= 12.5
Ages of remaining(18 boys)= 13
Average age of boys= age of each boy/total no. of boys
That is, (10x12 12x12.5 18x13)/40
= (120 150 234)/40
= 504/40
= 12.6
The avg age of boys is 12.6 yrs
