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| 1. |
Koushik can do a piece of work in X days and Krishnu can do the same work in Y days. If they work together, then they can do the work in1). (X+Y) days2). 1/(x+y)days3). xy/(x+y)days4). (x+y)/xydays |
| Answer» OPTION 3 is the RIGHT ANSWER | |