Amanda read 15 pages of her 150-page book in 2 hours. At this rate, how long will it take her to read the entire book?
2 hours
5 hours
10 hours
20 hours
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OpenStudy (anonymous):
@Brostep0s
OpenStudy (anonymous):
@shinalcantara
OpenStudy (kamibug):
Divide 150 by 15, then multiply what you get by 2.
OpenStudy (anonymous):
10 hours?
OpenStudy (anonymous):
which should be 10 *2=20
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OpenStudy (anonymous):
oh so then its 20, right?
OpenStudy (kamibug):
Yup. :)
OpenStudy (anonymous):
thanks! can u help me with another one?
OpenStudy (kamibug):
I'll do my best :D
OpenStudy (anonymous):
Kelsey painted one-fourth of her bedroom in three-sevenths of an hour. At this rate, how long would it take her to paint the entire room?
three over twenty-eight of an hour
twenty-eight over three of an hour
twelve over seven of an hour
seven over twelve of an hour
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OpenStudy (anonymous):
are you sure? @KamiBug
OpenStudy (anonymous):
1.71
OpenStudy (anonymous):
ook
OpenStudy (anonymous):
hmm... what do you think @Brostep0s
OpenStudy (anonymous):
@Brostep0s what happened?
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OpenStudy (anonymous):
is @KamiBug correct? is it 12/7?
OpenStudy (kamibug):
The whole room is 4/4, so you'd multiply 1/4 by 4 to get that. So, since it's proportional, you'd do the same to 3/7. Multiply it by 4...
OpenStudy (kamibug):
Does that make sense? Lol
OpenStudy (anonymous):
1.71?
OpenStudy (kamibug):
Yeah, which as a fraction is 12/7
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