A) 7 days
B) 6 days
C) 12 days
D) 18 days
Correct Answer: C
Solution :
Time taken to complete the work when they all the three work together. \[=\frac{ABC}{AB+BC+CA}\] or \[3=\frac{8\times 8\times C}{8\times 8+8\times C+C\times 8}\] \[=\frac{64C}{64+16C}\] \[\therefore \] \[192+48C=64C\] or \[C=\frac{192}{16}=12\] \[\therefore \] C along will complete the work in 12 days.You need to login to perform this action.
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