Correct Answer - Option 2 : 150/11
Given:
Rohit is 20% more efficient than Hemant
Rohit complete the work in 25 days along
Concept used:
Total work = total efficiency × number of days in which work complete.
Calculation:
Let the efficiency of Hemant be 100%
Then, the efficiency of Rohit be 120%
Ratio of efficiency of Rohit and Hemant = 120/100
⇒ 6/5
Total work = efficiency of Rohit × number of days in which work completed
⇒ 6 × 25 = 150 unit
Number of days in which they complete work together = total work/total efficiency
⇒ 150/11 days
∴ Rohit and Hemant complete the work together in 150/11 days.
