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 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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Another question on Mathematics

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