8 Total videos rented | Summary and Q&A

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April 15, 2014
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Khan Academy
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8 Total videos rented

TL;DR

The total number of video rentals by premium members at Store B between 2000 and 2002 is approximately 46,000.

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Questions & Answers

Q: How is the average number of rentals per premium member calculated?

The average number of rentals per premium member is calculated by dividing the total number of rentals for a given year by the total number of premium members for that year.

Q: Why is it necessary to multiply the average rentals by the total number of premium members again?

Multiplying the average rentals by the total number of premium members yields the total number of rentals because the average is calculated by dividing the total rentals by the total premium members, and multiplying by the total members cancels out the division.

Q: How is the total number of rentals for each year calculated?

The total number of rentals for each year is calculated by multiplying the average rentals per premium member by the total number of premium members for that year.

Q: Why is the total number of rentals calculated for each year?

The total number of rentals is calculated for each year to determine the total number of rentals at Store B between 2000 and 2002, as requested.

Summary & Key Takeaways

  • The first table provides the number of premium members at Store A and Store B.

  • The second table shows the average number of video rentals per premium member at Store B from 2000 to 2002.

  • To calculate the total number of video rentals at Store B, multiply the average rentals per premium member by the total number of premium members for each year and sum them up.

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