Établissement
Lycée de la Salle (Alès)
Année
2026-2027
Résumé
A merchant has a Roberval balance to weigh and sell his vegetables.
Unfortunately, he has lost all his weights.
He needs to be able to weigh every whole number of kilograms from
1 to 40, and he thinks that four carefully chosen weights are enough.
Is he right?
What happens if he needs to weigh quantities of up to 50 kg?
Unfortunately, he has lost all his weights.
He needs to be able to weigh every whole number of kilograms from
1 to 40, and he thinks that four carefully chosen weights are enough.
Is he right?
What happens if he needs to weigh quantities of up to 50 kg?