The average age of 15 people in a group is 24 years old. Then, when on

1.	The average age of 15 people in a group is 24 years old. Then, when one person grew, the average was 23. If so, how old is the new person?
Answer» Before the new person came, we had, Age of all persons÷Number of persons=24 Lets say that the previous number of PEOPLE was 'x'. Then, x/15=24 So, x=360 Now, after one more person came, The number of people became 16. The TOTAL age WOULD BECOME 360+y, where y is the age of new person. So, according to the question, (360+y)÷16=23 360+y=368 y=8 So, the age of new person is 8 years.

The average age of 15 people in a group is 24 years old. Then, when one person grew, the average was 23. If so, how old is the new person?

Answer»

Before the new person came, we had,

Age of all persons÷Number of persons=24

Lets say that the previous number of PEOPLE was 'x'.

Then,

x/15=24

So, x=360

Now, after one more person came,

The number of people became 16.

The TOTAL age WOULD BECOME 360+y,

where y is the age of new person.

So, according to the question,

(360+y)÷16=23

360+y=368

y=8

So, the age of new person is 8 years.

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The average age of 15 people in a group is 24 years old. Then, when one person grew, the average was 23. If so, how old is the new person?

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