Here's a similar problem:
I seen this problem a while back.
Let A=amount each child gets
Let T=total amount of money given among the kids.
The first one gets
The second one gets:
Now, we have two equations to solve:
Using the substitution method or whatever method you prefer.
We get T=81,000 and A=9000
There are 9 kids getting $9,000 each fom a total of $81,000