1. If A does some work in n days, then its 1 day work = 1/nPart
2. If A’s 1 day work is 1/n, then ending it will take n Days.
3. If the ratio of the number of people working in a given work is x: y, then the ratio of the time taken by them will be y: x.
4. If the ratio of the A to B is a: b, then the ratio of time taken by completing the same task is b: a.
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