1. ## Maths

Mrs White has 3 children whose average age is 12 years, and her neighbour Mrs Green has 2 children whose average age is 7 years. the average age of the 5 children is?

2. ## Re: Maths

Suppose you have an odd number...what must you add to it to get the next odd number?

edit: The problem was changed as I posted...

3. ## Re: Maths

Thanks i worked that one out. My brain likes to confuse itself from time to time.

4. ## Re: Maths

yeah i changed it because i worked that one out but now having troubles with this question?

5. ## Re: Maths

Originally Posted by Spixol123
Mrs White has 3 children whose average age is 12 years, and her neighbour Mrs Green has 2 children whose average age is 7 years. the average age of the 5 children is?
First, I recommend posting problems in the appropriate forums. They will get more attention that way.

For this problem, you may use a weighted average to find the mean of the ages $\bar{A}$ for the five children:

$\bar{A}=\frac{3(12)+2(7)}{3+2}=?$

6. ## Re: Maths

10. thanks mate Great help and will start posting in appropriate forums