Paco had w cookies. He gave x cookies to his friend and ate y cookies. How many more cookies did he eat than those he gave to his friend?
Paco had w cookies. He gave x cookies to his friend and ate y cookies. How many more cookies did he eat than those he gave to his friend?

Paco had w cookies. He gave x cookies to his friend and ate y cookies. 

We need to calculate how many more cookies did he eat than those he gave to his friend. 

We need to calculate y - x.