- 30 days
- 80 days
- 100 days
- None of these
- b
-
Total Work=Men*Days
Total Work=20*40=800
Total Work=Men*Days
800=10*Days
800/10=Days
Days=80
Total Work=Men*Days
Total Work=20*40=800
Total Work=Men*Days
800=10*Days
800/10=Days
Days=80