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Mathematics 21 Online
OpenStudy (anonymous):

PLEASE HELP ME I WILL MEDAL AND FAN!!!!!!!!!!!!!!! http://prntscr.com/5p38e8

OpenStudy (anonymous):

@perl

OpenStudy (anonymous):

\[\frac{ 45 }{ 15 }+\frac{ 35 }{ 10 }=?\] solve it @12pink12

OpenStudy (anonymous):

the answer is 6.5 @MARC_

OpenStudy (anonymous):

good

OpenStudy (anonymous):

I 4 more heres the next question A pencil factory makes 50 cases of pencils in 5 hours. How long will the pencil factory spend making 55 cases?

OpenStudy (anonymous):

\[5\div50=0.1\]\[0.1\times55=?\] solve it @12pink12

OpenStudy (anonymous):

and u will get the answer

OpenStudy (anonymous):

so wat u got? :)

OpenStudy (anonymous):

the answer is 5.5

OpenStudy (anonymous):

good

OpenStudy (anonymous):

is it 5.5 hours ???

OpenStudy (anonymous):

yup it's @12pink12

OpenStudy (anonymous):

A car factory can build 14 cars in 4 hours. How many cars can it build in 7 hours? A. 49 B. 25 C. 24.5 D. 12.5

OpenStudy (anonymous):

did u tried? @12pink12

OpenStudy (anonymous):

well I think its B

OpenStudy (anonymous):

@MARC_

OpenStudy (anonymous):

nope

OpenStudy (anonymous):

\[\frac{ 14 }{ 4 }\times7=?\] solve it @12pink12

OpenStudy (anonymous):

24.5 right @MARC_

OpenStudy (anonymous):

just 2 more

OpenStudy (anonymous):

http://prntscr.com/5p3ht0

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