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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 (anonymous):
ok so it's (82.5-15)/155
OpenStudy (anonymous):
32.5 so D
OpenStudy (griffindore):
oh it was D lol thanks guys
OpenStudy (anonymous):
np
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OpenStudy (griffindore):
I thought it wasent D
OpenStudy (griffindore):
btw where did the 15 come from
OpenStudy (griffindore):
Evan spent 20 hours doing homework last week. This week he spent 25 hours doing homework. He says that he spent 125% more time doing homework this week. Is he correct? Show your work to justify your decision.
OpenStudy (griffindore):
thats my last question
OpenStudy (anonymous):
oh sorry I meant 115
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OpenStudy (griffindore):
lol ok
OpenStudy (anonymous):
ok so first of all he's wrong next we (20-25)/25 I think right
OpenStudy (griffindore):
you mean 125
OpenStudy (anonymous):
possibly
OpenStudy (griffindore):
what do you mean
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OpenStudy (anonymous):
so it is (20-25)/25
OpenStudy (griffindore):
ya thats 0.2
OpenStudy (anonymous):
so 20%
OpenStudy (griffindore):
ya
OpenStudy (griffindore):
So its 20%
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