Determining rates with fractions | 7th grade | Khan Academy | Summary and Q&A

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June 15, 2015
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TL;DR

Calculate the fraction of a bottle of cleaning solution needed to clean a bathroom.

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Q: What is the problem being discussed in the content?

The problem is to determine the fraction of a bottle of cleaning solution needed to clean Calvin's entire bathroom.

Q: How is the problem approached?

The problem is approached by finding the rate of bottles per bathroom, and this is done by dividing one third by three fifths.

Q: What is the result of the calculation?

The result is that it takes five ninths of a bottle of cleaning solution to clean one bathroom.

Q: Why is it important to determine the rate of bottles per bathroom?

Finding the rate of bottles per bathroom allows for accurately calculating the fraction of a bottle needed to clean a certain number of bathrooms.

Summary & Key Takeaways

• The problem asks how much of a bottle of cleaning solution Calvin will use to clean his entire bathroom.

• To solve the problem, the number of bottles per bathroom needs to be determined.

• By dividing one third by three fifths, it is found that it takes five ninths of a bottle per bathroom.