Question

The average age of the berger children is at least 15. The ages of the children are 19,14,and 12. What is the age of the fourth child

Answer 1

So, age of fourth child is 15

Explanation:

Given:

Average age = 15

Age of three children = 19 , 14 , 12

To Find:

Age of fourth child = ?

Solution:

From the given data we can see that there are total four children of Berger

So

Total Children = 4

Now let the age of fourth child be x

We know that

Average
`=(Sum)/(Total No)`

Putting in the values

15
`=(19+14+12+x)/(4)`

Multiplying both sides by 4

15*4
`=(19+14+12+x)/(4)*4`

it gives us

60 = 19+14+12+x

60 = 45 + x

subtracting 45 from both sides

60-45 = 45+x-45

15= x

or x=15

So age of fourth child is 15