A) X
B) Y
C) Z
D) X and Z both
Correct Answer: C
Solution :
(c): x can do fall work in 40 days \[y\to 4/10\text{ }work\Rightarrow 40\text{ }days.\] \[\therefore y\to full\text{ }work\to 100days\] \[Z\to 1/3\text{ }work\Rightarrow 13\text{ }days\] \[Z\to full\,work\Rightarrow 39\,days.\]You need to login to perform this action.
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