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Mathematics 9 Online
OpenStudy (anonymous):

Susan can type 10 pages in 5 minutes. Mary can type 5 pages in 10 minutes. Working together, how many pages can they type in 30 minutes?

OpenStudy (anonymous):

Susan 1min 2 pages . mary 1min 1/2 job . total 1 min susan and mary will do 2.5 job 30 min 75pages

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