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Mathematics 20 Online
OpenStudy (anonymous):

Donald can mow the lawn in 70 min. His sister daisy can mow the same lawn in 30 min. If they were to work together how long would it take them to mow the lawn?

OpenStudy (anonymous):

Ooh i like this question. If they worked together both of theyre time would be split in have. Then you add them together. 2/70 + 2/30 = 50

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