1. ## Simple Avg Question

Dear All,

Mention the ages of your any 10 relatives. Find the average age of these 10 relatives. If average age of your 2 teachers is 55 years. Also find the average age of all these 12 people.

Thanks,

2. Originally Posted by cu4mail
Dear All,

Thanks,
I would say there is not enough info, but I think the question wants you to supply ten ages. If that is the case, you need to add all ten of the ages up and divide by ten. To find the average with the teachers included, add the ten of your relatives' ages up along with your two teachers. Divide that sum by 12.

3. Originally Posted by cu4mail
Dear All,

Mention the ages of your any 10 relatives. Find the average age of these 10 relatives. If average age of your 2 teachers is 55 years. Also find the average age of all these 12 people.

Thanks,
The step where you find the averages of the 10 relatives is redundant.

The average of all 12 people will be the sum of all the ages divided by 12. We can get the sum of the ages of the two teachers by taking the average age (55 years) and multiplying by 2: 110 years. So
$\text{Average} = \frac{\text{Sum of ages of 10 relatives} + 110}{12}$

-Dan

4. ## Thanks!

Hi,

Thanks for your prompt help. Yes we have to assume the ages of relatives and it works for me..

Alwasy thankful to all of you.

Regards,