Question

14 workers take 6 days to complete a job. They work for 2.5 days and eventually 4 workers leave the job.
How many more days will the remaining 10 workers take to complete the job?

• A. 4
• B. 5
• C. 6
• D. 7
• E. None of these

Answer 1

The correct option is E

None of these

Work done by one worker in one day = $\frac{1}{84}$

Work done by 14 workers in 2.5 days = $\frac{5}{12}$

Work left = $\frac{7}{12}$

Time taken = $\frac{7}{12}\times \frac{84}{10}=4.9$ days