A can do a piece of work in 20 days and B can do it in 12 days,B work for 9 days,in how many days A alone can do the work - QAmmunity.org

A can do a piece of work in 20 days and B can do it in 12 days,B work for 9 days,in how many days A alone can do the work

asked Mar 12, 2021 179k views

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