state gov AP Police SI (Pre+Mains) Mock Test 2022 Quantitative Aptitude Time and Work Work Efficiency
Three workers Rahul, Sumit and Ajay undertook a work to dig a pit. When Sumit and Rahul work together, they take 6 days to dig the pit. However, when Rahul and Ajay work together, they take 9 days to finish the same task. When Rahul worked alone, he took thrice as much time that would be taken by all three of them working together. How much time is required if they all work on the same task?
1
\(4\frac{2}{3}\) days
2
\(3\frac{5}{7}\) days
3
\(4\frac{4}{5}\) days
4
\(5\frac{6}{7}\) days