in a Class of 40. there are 10 boys at the age of 12 years. 12 at the age of 1.25 years and rest at the age of 13. the average age of the boys in the class is _____ years
(A 12.1 (b 12. 2 (C 12.5 (D 12.6 (E 12.75
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Answer:
12.75
Step-by-step explanation:
12+12.5+13=37.5/2
12.75
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