20 ആളുകൾ 20 ദിവസം കൊണ്ട് ചെയ്തു തീർക്കുന്ന ജോലി ചെയ്യാൻ 5 പേർക്ക് എത്ര ദിവസം വേണം ?
A80
B60
C50
D20
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അജയൻ ഒരു ജോലി 2 മണിക്കുറും അരുൺ 6 മണിക്കൂറും ചെയ്തു. രണ്ട് പേർക്കും കൂടി ലഭിച്ച കൂലി 800 രൂപയാണ്. ഈ തുക എങ്ങനെയാണ് വീതിക്കേണ്ടത് ?