If A can do a job in 10 days another person B can do the same job in 20 days then time required to do the job when both of them working todether.

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If A can do a job in 10 days another person B can do the same job in 20 days then time required to do the job when both of them working todether.

1.1?30

2.3?20

3.1?10

4.20?3

Posted Date:-2021-09-19 19:52:35

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