Question

A is thrice efficient as B and C is twice as efficient as B. what is the ratio of number of days taken by A,B and C, when they work individually?

A) 2:6:3 B) 2:3:6 C) 1:2:3 D) 3:1:2

Answer 1

Answer:

A) 2:6:3

Step-by-step explanation:

A    :    B    :    C    

Ratio of efficiency               3     :    1    :    2    

Ratio of No.of days            1/3  :   1/1  :   1/2    

    or                                       2    :    6    :    3    

Hence A is correct.  

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