A) 24 days
B) 40 days
C) 30 days
D) 20 days
Correct Answer: A
Solution :
Work done by A, B and C together in 1 day \[=\left[ \frac{1}{10}+\frac{1}{12}+\frac{1}{15} \right]\] \[=\frac{1}{8}\] Now, work done by A alone in 1 day \[=\frac{1}{8}-\frac{1}{12}\] \[=\frac{1}{24}\] Hence, A will take to do it alone m 24 days.You need to login to perform this action.
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