Donavon and some friends go to a faor. Donavon spend 1/2 of his money on rides. He then spends $5 on food. At the end of the Day Donavon has $2 dollars remaining
If he has 2dollars left, and spent 5dollars on food, that means he had 7dollars remaining after he spent half of his money. You have to duplicate 7 and then you get 14.
