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Collin is collecting rocks for a science project. So far, he has collected 36 rocks, which is 90% of the total he needs. How many total rocks does Collin need for his science project?

User GeirGrusom
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2 Answers

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Answer:

he needs 4 more

Explanation:

User Denis Tarasov
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Answer:

40 total rocks

Explanation:

100 * 36 / 90 = 40

User Vasile
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