defence exam Army Cadet College (ACC) Previous Year Papers Mock Quantitative Aptitude Time and Work Work Efficiency
Working together, A and B can do a job in 6 days. B and C can do the same job in 10 days, while C and A can do it in 7.5 days. How long will it take if all A, B and C work together to complete the job?
1
8 days
2
5 days
3
3 days
4
7 days