Question 902048
Here, we have Mary, who sold her house for $18 000. The realtor earned 9 % on the sale. 

9% on the sale is 0.09 * 18 000 = $1620 (this is what the realtor earned)

So, the profit is $ 18 000 - $ 1620 = $ $16 380 

Mary gives 3/5 of that to her mother. 

3/5 * 16380 =  $ 9828 

After Mary's mother receives the $ 9828 , Mary is left with 
$ 16 380 - $ 9828 =  $ 6552

Mary keeps 2/3 for her use , so we find out that this amount is
2/3 * $6552 = $ 4368 

She puts 1/3 into the bank and this amount should be $ 6552 - $ 4368 = $ 2184.

To check, 1/3 *  $6552 =  $ 2184