Question

professor walter took a sample of metal and measured how many kilograms of each metal were present. the professor found 72.41 kilograms of aluminum, 0.97 kilograms of lead, and 9.47 kilograms of silver. how many kilograms was professor walter’s sample?

kilograms

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Explanation:

Step1: Identifier les quantités à ajouter

On doit ajouter les masses des trois métaux : aluminium ($72.41$ kg), plomb ($0.97$ kg) et argent ($9.47$ kg).

Step2: Effectuer l'addition

Calculer $72.41 + 0.97 + 9.47$. D'abord, $72.41 + 0.97 = 73.38$. Ensuite, $73.38 + 9.47 = 82.85$.

Answer:

$82.85$