1.

A can do a work in 20 days and B in 50 days. If they work on it together for 5 days, then what fraction of work is left?1). $\frac{13}{20}$2). $\frac{1}{3}$3). $\frac{1}{6}$4). $\frac{2}{9}$

Answer»

I am not SURE, may be $\FRAC{13}{20}$ is correct



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