A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is? - Just Crack Interview

A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is?

A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is?

Ques:- A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is?
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