Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A, B and C working together completed a job in 20 days. The ratio of their efficiencies is 3 : 4 : 5. How many days will be required by the fastest worker alone to complete the whole work?
1
40 days
2
48 days
3
36 days
4
More than one of the above
5
None of the above