X and Y can do a piece of work in 20 days and 12 days respectively. X started…
TCS · 2025
X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last?
- A.
6 days
- B.
10 days
- C.
15 days
- D.
20 days
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