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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 in
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- (x + y) days
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1 days (x + y) -
xy days (x + y) -
(x + y) days xy
Correct Option: C
Koushik’s 1 day’s work
| = | x |
| Krishnu’s 1 day’s work = | y |
∴ One day’s work of both
| = | + | = | ||||
| x | y | xy |
| ∴ Required time = | days | x + y |
