A) 2 days
B) \[1\frac{2}{3}\]days
C) 3 days
D) \[2\frac{2}{3}\]days
Correct Answer: B
Solution :
Work done by A and B in 5 days \[=5\left( \frac{1}{10}+\frac{1}{15} \right)=5\left( \frac{3+2}{30} \right)=5\times \frac{5}{30}=\frac{5}{6}\] Remaining work\[=1-\frac{5}{6}=\frac{1}{6}\] \[\therefore \] Time taken by \[A=\frac{1}{6}\times 10=\frac{5}{3}\]days\[=1\frac{2}{3}\]You need to login to perform this action.
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