Quantitative Aptitude :: Time and Work - Discussion
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Choose the correct option.
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 ?
A6 days
B10 days
C15 days
D20 days
Answer: Option (Login/Signup)
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