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A യും B യും ചേർന്ന് 24 ദിവസം കൊണ്ട് ഒരു ജോലി ചെയ്യാൻ കഴിയും. 40 ദിവസത്തിനുള്ളിൽ A ക്ക് തനിച്ച് ഈ ജോലി ചെയ്യാൻ കഴിയും. എത്ര ദിവസത്തിനുള്ളിൽ B ഒറ്റയ്ക്ക് ജോലി ചെയ്തു തീർക്കും ?

A60

B120

C80

D96

Answer:

A. 60

Read Explanation:

ആകെ ജോലി = LCM ( 24, 40) = 120 A യുടെ കാര്യക്ഷമത = 120/40 = 3 A + B യുടെ കാര്യക്ഷമത = 120/24 = 5 B യുടെ കാര്യക്ഷമത = 5 - 3 = 2 B ജോലി പൂർത്തിയാക്കാൻ എടുക്കുന്ന സമയം = 120/2 = 60


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