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Mathematics 10 Online
OpenStudy (anonymous):

A librarian wants to know many of her card members would buy used DVDs from the library. The library has 1162 card members. The librarian randomly selects 80 of those members and finds that 63 of them would buy used DVDs from the library. Based on this sample, about how many of the card members would buy used DVDs from the library? A)915 B)867 C)732 D)586

OpenStudy (anonymous):

Someone please help!

OpenStudy (zarkon):

based on the information given. What is your best guess for the % of people that would buy a dvd?

OpenStudy (anonymous):

i'm not sure, i'm not good with percents!

OpenStudy (zarkon):

you selected 80 people and 63 would buy a dvd...what % is that?

OpenStudy (anonymous):

50.4?

OpenStudy (zarkon):

no

OpenStudy (anonymous):

oh

OpenStudy (zarkon):

63/80

OpenStudy (zarkon):

.7875 or 78.75%

OpenStudy (zarkon):

take 78.75% of 1162

OpenStudy (anonymous):

okay once sec

OpenStudy (anonymous):

915%?

OpenStudy (anonymous):

So A?

OpenStudy (zarkon):

you don't need the %

OpenStudy (anonymous):

Okay 915 people.

OpenStudy (zarkon):

and yes it is A

OpenStudy (anonymous):

Okay, thank you so much!

OpenStudy (anonymous):

and for explaining!

OpenStudy (zarkon):

np

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