The average age of 5 boys is 12. The average age of 3 others is 16. The average age
of all the 8 boys is
a) 10.5 yrs b) 11.5 yrs c) 12.5 yrs d) 13.5 yrs
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Sum of the ages of 5 boys = 5 × 12 = 60
Sum of the ages of 3 boys = 3 × 16 = 48
Therefore,
Sum of the ages of all 8 boys = (60 + 48) / 8 = 13.5
Option: (d)
Sum of the ages of 3 boys = 3 × 16 = 48
Therefore,
Sum of the ages of all 8 boys = (60 + 48) / 8 = 13.5
Option: (d)
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