It is given in the Question that, Anna earned $ 72.
And out of $ 72, she gave 1/3 to her mother.
And 1/3 rd of 72 = $24.
So she gave $24 to her mother. Therefore remaining amount is

And out of 48, she spent 1/4 on going out. And 1/4 of 48 is

So remaining amount is

We have to find 36 is what fraction of 72, and it is
