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A man can do a piece of work in 30 hours...

A man can do a piece of work in 30 hours. If he works with his son then the same piece of work is finished in 20 hours. If the son works alone he can do the work in

A

60 hours

B

50 hours

C

25 hours

D

10 hours

Text Solution

Verified by Experts

The correct Answer is:
A
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