The best place to start your CAT preparation is CAT previous year's question paper. Solve this question that appeared in CAT 2021 Slot 3 question paper in one go and take your CAT preparation a notch above.
One day, Rahul started a work at 9 AM and Gautam joined him two hours later. They then worked together and completed the work at 5 PM the same day. If both had started at 9 AM and worked together, the work would have been completed 30 minutes earlier. Working alone, the time Rahul would have taken, in hours, to complete the work is
A. 12
B. 11.5
C. 12.5
D. 10
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