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Mathematics 13 Online
OpenStudy (anonymous):

Jack usually mows his lawn in 6 hours. Marilyn can mow the same yard in 4 hours. How much time would it take for them to mow the lawn together?

OpenStudy (anonymous):

\[{1 \over 4}+{1\over 6}={1 \over x}\]

OpenStudy (anonymous):

x=12/5

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