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Mathematics, 18.11.2019 19:31 ayoismeisalex
Lizzy working alone can do 3 jobs in q hours, and michaelworking alone can do 4 jobs in r hours. how long will it take lizzy and michael to do 3 jobs if they work together?
just give me formula but make it clear
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Lizzy working alone can do 3 jobs in q hours, and michaelworking alone can do 4 jobs in r hours. how...
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