The average age of 12 boys is 15 years if the average age of first two boys is 20 years find the average age of the other 10 boys
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Step-by-step explanation:
12 boys = 180 age
average age of first two boys is 20 years ,
40+10boys = 180
10 boys = 140
avg. of 10 boys = 14 yrs
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