8. The average age of 3 boys is 15 yrs. But if one is not considered,

2 answers:

8 0

Answer:

Step-by-step explanation:

15 plus 15 plus 15 is 45 - 15 =30

3 0

5 is the age of the expelled one because 20+20=40/2=20 20+20+5=45/3=15

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