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How long will Rohit take to complete the task is he worked alone?

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Rohit and Virat, working together, can complete an assigned task in 20 days.
If Rohit worked alone and completes half the task and then Virat takes over and completes the remaining half, then the task gets completed in 45 days.
How long will Rohit take to complete the task is he worked alone?
Assume that Rohit is more efficient then Virat.

posted Oct 9, 2020 by Sandeep Bedi

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