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Mathematics 22 Online
OpenStudy (anonymous):

One maid can clean a house in 7hrs. Another maid can do it in 4 hrs. How fast could they do it working together? a. 9 and 1/3 hr b. 1/28hr c. 2 and 6/11 hr d. 1/11hr

OpenStudy (anonymous):

the answer is B

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