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.

If A can do a job in 10 days another person B can do the same job in 2

1.	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.
A.	1?30
B.	3?20
C.	1?10
D.	20?3
Answer» E.

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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.

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