A) 10 b
B) 12 b
C) 8 b
D) 24 b
Correct Answer: B
Solution :
A?s 1 h work \[=\frac{1}{4}\](B + C)?s1 h work \[=\frac{1}{3}\] (A + C)?s 1 h work \[=\frac{1}{2}\] \[\therefore \]C?s 1 h work \[=\frac{1}{2}-\frac{1}{4}=\frac{2-1}{4}=\frac{1}{4}\] and B?s 1 h work \[=\frac{1}{3}-\frac{1}{4}=\frac{4-3}{12}=\frac{1}{12}\] and B alone can do the work in 12 h.You need to login to perform this action.
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