It takes Hadi 6 hours to do a certain job, while it takes Rami 9 hours to do the same job.
If Hadi and Rami work together, how long would it take them to accomlish the same task?
answe as fast as possible.
If Hadi and Rami work together, how long would it take them to accomlish the same task?
answe as fast as possible.
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