1.

A can do $$\frac{1}{3}$$ rd of a work in 5 days and B can do the do $$\frac{2}{5}$$th of this work in 10 days. Both A and B, together can do the work in ?

A. ${\text{ 7}}\frac{3}{8}{\text{ days}}$$
B. ${\text{8}}\frac{4}{5}{\text{ days}}$$
C. ${\text{9}}\frac{3}{8}{\text{ days}}$$
D. 0 days
Answer» D. 0 days


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