Question
Download Solution PDFRaju and Rajat working together take 5 days to complete a piece of work. If Raju alone can do this work in 7 days, how long would Rajat take to complete the same work?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
(Raju + Rajat) together complete the work = 5 days
Raju alone can complete the work = 7 days.
Formula used:
Total work = efficiency × time
Calculation:
| Efficiency | Person | Time | Total work |
| 7 | Raju + Rajat | 5 | 35 |
| 5 | Raju | 7 |
Now,
Efficiency of Rajat = (7 - 5) = 2 unit/day
Time taken to complete the work by Rajat = 35/2 = 17.5 days
∴ The correct answer is 17.5 days.
Last updated on Jul 10, 2025
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