How many bottles of all-purpose cleaner are needed to clean 10 classrooms?

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Published on March 12, 2025 10:00:19 PM ● Video Link: https://www.youtube.com/watch?v=SripNQHP3AI

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In this question, we analyze the consumption of multipurpose cleaner for cleaning classrooms. We know that, to clean two rooms, 750 ml of the product, which is sold in 500 ml packages, are used. Our goal is to determine how many packages are needed to clean all 10 rooms, assuming that consumption remains constant.

The alternatives are:
(A) 5
(B) 6
(C) 7
(D) 8
(E) 9

I present the solution step by step, explaining how to perform proportionality and determine the minimum number of packages needed.

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