Casino X98527

Statement

In order to play table games at the casino you need some tokens. Red tokens cost $7$ euros and yellow tokens cost $4$ . Write a function @buy_tokens(n)@ that given a number $n$ of euros such that $n \ge 20$ , it returns the equivalence in tokens. When several equivalences are possible the function returns the one minimizing the total number of tokens.

Sample session

>>> buy_tokens(20)
(0, 5)
>>> buy_tokens(50)
(6, 2)
>>> buy_tokens(39)
(5, 1)

Information

Author: Jorge Castro
Language: English
Official solutions: Python
User solutions: Python