SOLUTION: The average age of 25 boys in a class is 12 years. If three boys aged 13, 14 and 15 and two boys each of age 16 years are admitted to the class, what will the new average age of

Algebra ->  Finance -> SOLUTION: The average age of 25 boys in a class is 12 years. If three boys aged 13, 14 and 15 and two boys each of age 16 years are admitted to the class, what will the new average age of      Log On


   

Question 1055437: The average age of 25 boys in a class is 12 years. If three boys aged 13, 14 and 15 and
two boys each of age 16 years are admitted to the class, what will the new average
age of the boys be?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
A=T%2F25=12
So then the total of all the ages, T, is,
T=25%2A12
T=300
So then adding the three boys will make this,
T=300%2B13%2B14%2B15%2B2%2816%29
T=374
So now find the average with the additional 5 boys,
A%5Bnew%5D=374%2F30
A%5Bnew%5D=12.47