A) 6 day
B) 8 day
C) 7 day
D) 9 day
Correct Answer: A
Solution :
Ratio of rates of working of A and B \[=3:1.\] So, ratio of times taken \[=1:3.\] As 1 days work \[=\frac{1}{8};\] Bs 1 days work \[=\frac{1}{24}\] (A + B)s 1 days work \[=\frac{1}{8}+\frac{1}{24}=\frac{4}{24}=\frac{1}{6}\] So, A and B together can finish the work in 6 days.You need to login to perform this action.
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