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'A' യും 'B' യും കൂടി 18 ദിവസങ്ങൾ കൊണ്ട് തീർക്കുന്ന ഒരു ജോലി 'B' യും 'C' യും കൂടി 24 ദിവസങ്ങൾ കൊണ്ടും 'A' യും 'C' യും കൂടി 36 ദിവസങ്ങൾ കൊണ്ടുംതീർക്കും. എങ്കിൽ, 'C' ഒറ്റയ്ക്ക് ഈ ജോലി തീർക്കാൻ എത്ര ദിവസങ്ങൾ എടുക്കും?

A144

B72

C36

D108

Answer:

A. 144

Read Explanation:

ആകെ ജോലി = LCM(18,24,36) = 72 കാര്യക്ഷമത (A + B) = 72/18 = 4 കാര്യക്ഷമത (B + C) = 72/24 = 3 കാര്യക്ഷമത (A + C) = 72/36 = 2 2A + 2B + 2C = 4 + 3 + 2 = 9 A + B + C = 9/2 = 4.5 4 + C = 4.5 C = 0.5 എടുക്കുന്ന സമയം = 72/0.5 = 144


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