Help with the solution of the problem taken from the bookV2.0 Let's start programming in Python | Gaddis Tony?

Question

Python

Solved problems from the book Getting Started with Python | Gaddis Tony couldn't solve this one:

I found a solution on YouTube, but I didn't understand one point:


Please explain the solution, I'm a dumb fuck in matan, but I'll fix it :)

Answer 1

1.5 sugar - 48 buns
? sugar - N buns
1.5 times N and divided by 48. Ta-yes!
N * 1.5 / 48