Home > Riddles > The fair counting of the loaves

The fair counting of the loaves

Pure logicLevel 2/5

It is one of the best miniatures of fair distribution: it seems like elementary arithmetic, but it forces us to distinguish between what each one carried and what he really contributed to the third.

Two travelers cross the desert. One carries 5 loaves.

The other has 3 loaves. Halfway there they are joined by a third traveler, who does not bring food.

The three decide to share the 8 loaves equally. When saying goodbye, the newcomer leaves them 8 coins as thanks.

The first proposes to distribute them according to the loaves that each one carried: 5 coins for him and 3 for the other. Is that distribution correct?

If not, how should the 8 coins actually be divided?

Hints

Show hints
  1. Don't just count how many loaves each person had at the beginning; Count how much each one ended up contributing to the third traveler.
  2. If all three eat equally, it is convenient to imagine each loaf divided into three equal parts.
  3. After each traveler eats his or her corresponding third, compare how many thirds each person has placed for the guest.

Solution

Show full solution

The 8 loaves, divided among 3 people, give each person 8/3 loaves. The traveler who carried 5 loaves consumed 8/3 and, therefore, contributed to the third:
5 - 8/3 = 7/3 loaves The traveler who carried 3 loaves consumed 8/3 and contributed:
3 - 8/3 = 1/3 loaves So the third traveler ate in a 7:1 ratio of one to the other.

Therefore, the 8 coins must also be distributed in a 7:1 ratio:
7 coins for those who carried 5 loaves and 1 coin for those who carried 3 loaves.

Related riddles

Keep practicing

If you enjoyed this one, try more pure-logic riddles, explore this theme, browse the full archive, or read the riddle-solving guide.

← Previous: Who has the pez? · Next: The carrera impossible →