Manoj can do a piece of work in 8 hours. Anand can do it in 8 hours. With the assistance of Anil, they completed the work in 2 hours. In how many hours can Anil alone do it?
A4
B3
C6
D5
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12 പുരുഷന്മാരോ,18 സ്ത്രീകളോ ഒരു ജോലി 14 ദിവസം കൊണ്ട് ചെയ്തു തീർക്കുന്നു. എന്നാൽ 8 പുരുഷന്മാരും 16 സ്ത്രീകളും ചേർന്ന് അതേ ജോലി എത്ര സമയത്തിനുള്ളിൽ ചെയ്തു തീർക്കും ?