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OpenStudy (griffindore):
Kelly read 30 pages of her 300-page book in 6 hours. At this rate, how long will it take her to read the entire book?
60 hours
5 hours
6 hours
30 hours
OpenStudy (anonymous):
30p=6h
so divide 300 by 30
OpenStudy (griffindore):
ya its 10 right?
OpenStudy (anonymous):
yes then multiply that by 6
OpenStudy (griffindore):
60
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OpenStudy (anonymous):
yes :D
OpenStudy (griffindore):
so its 60% is the awnser?
OpenStudy (griffindore):
oh i mean 60 hours
OpenStudy (anonymous):
yes
OpenStudy (griffindore):
oh thanks can you help me with like 2 more
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OpenStudy (anonymous):
maybe I'm better at some things than others
OpenStudy (griffindore):
the next ones with fractions
OpenStudy (griffindore):
can you walk me through it but dont give me the awnser
OpenStudy (anonymous):
ya if I can understand it
OpenStudy (griffindore):
Marisa painted one-half of her bedroom in three-fourths of an hour. At this rate, how long would it take her the paint the entire room?
three-eighths of an hour
eight-thirds of an hour
four-sixths of an hour
six-fourths of an hour
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OpenStudy (anonymous):
1/2 of b=3/4 of an hour so the other half of her room would be 1/2of b=3/4
does that make sense
OpenStudy (griffindore):
sorta
OpenStudy (anonymous):
ok so she did 1/2 of her room and that took 3/4ths of an hour so it would take the same amount of time to do the other half
OpenStudy (griffindore):
oh ok
OpenStudy (griffindore):
so its D
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OpenStudy (griffindore):
:D
OpenStudy (anonymous):
yep
OpenStudy (griffindore):
Ill d this one on my own tell me if i mess up or do some thing wrong
OpenStudy (griffindore):
Erika calculated that she would spend $115 on school supplies this year. She actually spent $82.50 on school supplies. What is Erika’s percent of error?
28.3%
2.8%
39.4%
32.5%
OpenStudy (griffindore):
oh acually i have no idea
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OpenStudy (griffindore):
I divide something and 82.50 to get a percentage right?
OpenStudy (anonymous):
or I think that maybe you could subtract 115 by 82 and get a close estimate but i'm not sure
OpenStudy (griffindore):
Oh can we try both
OpenStudy (anonymous):
sure
OpenStudy (griffindore):
Ok well try my idea then yours
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