A,B,C can complete a work in 10,15and 30 days respectively .A and B started the work,but B left after 3 days and C joined A in how many days was the work completed
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A,B,C can complete a work in 10,15and 30 days respectively .A and B started the work,but B left after 3 days and C joined A in how many days was the work completed
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