A is thrice as good a work man as B and together they finish a piece of work in 12 days.The number of days taken by A alone to finish the work is :
Options
A) 28 days.  B) 14 days.  C) 12 days.  D) 16 days.  E) 18 days.
Solution   (A’s 1 day’s work): (B’s 1 day’s work)= 3 : 1.   (A + B)'s 1 day’s work = 1/12   Divide 1/14 in the ratio 3 : 1.   ∴ A’s 1 day’s work = (1/12 x2/3)= 1/16   Hence,A alone can finish the work in 16 days.   Answer 16 days.
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A is thrice as good a work man as B and together they finish a piece of work in 12 days.The number of days taken by A alone to finish the work is :