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Mathematics 17 Online
OpenStudy (griffindore):

Hey have a couple super quick questions

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

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

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

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%

OpenStudy (anonymous):

yes

OpenStudy (griffindore):

oh ok lol :D

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