Mathematics, 26.07.2019 22:50 christi1175
To complete a job, it takes: 2 hours for alice and bob, 3 hours for alice and charlie and 4 hours for bob and charlie. how long will the job take if all three work together?
Answers: 1
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To complete a job, it takes: 2 hours for alice and bob, 3 hours for alice and charlie and 4 hours f...
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