' X ' can complete a job in 12 days. If aad 'Y' work together, they can complete the job in 6 \frac{2}{3} days. "Y' alone can complete the job in X' aad 'Y' work together, they can complete the job in 6 \;{2}/{3} days. "Y' alone can complete the job in

UPSC 2013 CDS 1 Math Paper

Question : 4 of 100

Marks: +1, -0

' X ' can complete a job in 12 days. If ′X′ aad 'Y' work together, they can complete the job in 6‌

days. "Y' alone can complete the job in

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