A) 9 days
B) 4 days
C) 6 days
D) 8 days
Correct Answer: D
Solution :
Let the total work be 60. So, Efficiency of \[(A+B),\,(B+C)\]and \[(A+C)\] are 4, 6, and 5 respectively. \[\therefore \] Time taken by A, B and C together to complete the job. \[=\,\frac{60\times 2}{(4+6+5)}=\frac{120}{15}\] = 8 days.You need to login to perform this action.
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