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50 people can complete a work in 50 days...

50 people can complete a work in 50 days. They started the work together but at the end of every 10th day 5 people join the work. In how much time the work would be completed?

A

1. `52(1)/(7)`

B

2. `47(2)/(7)`

C

3. `42(6)/(7)`

D

4. `42(5)/(7)`

Text Solution

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The correct Answer is:
B
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