Ramesh does half as much work as Parul in of the time. If together Ramesh and Parul take 24 days to complete the work, then how much time will Parul take to do it?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 39 days.
Given that
Ramesh does half as much work as Parul in of the time
Ramesh and Parul take 24 days to complete the work
Concept used
Efficiency ∝ (Work/Time)
Work = Time × Efficiency
According to the question
The Ratio of efficiency of Ramesh and Parul = 5: 8
So, Total work = (5 + 8) × 24 = 312
Hence, Parul do the complete work in = 312/8 = 39 days