Allan gave 5/8 of his money to his son and then gave his daughter 1/2 of the remainder. He kept $150.00 for himself.

How much money did Allan have at the beginning?
How much money did his son get?

2 answers

After giving to his son, he has 3x/8 left
after giving to his daughter he has 3x/16 left

3x/16 = 150
3x = 2400
x = 800

check:
first gift = (5/8)(800) = 500
amount left = 300
2nd gift = (1/2)(300) = 150
amount left = 150

Editorial:
Looks like sexism in continued in math questions.
Well, it would make it too easy if they both got the same amount. And sexism works both ways. You can't give the girl more money either.