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12 ആളുകൾ 30 ദിവസം കൊണ്ട് ഒരു ജോലി തീർക്കുന്നു. ഇതേ ജോലി 18 ദിവസം കൊണ്ട് തീർക്കാൻ എത്ര ആളുകൾ വേണം ?

A16

B22

C20

D14

Answer:

C. 20


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