A) 3
B) 5
C) \[4\frac{1}{2}\]
D) 4
Correct Answer: D
Solution :
Work done by A in one day \[=\frac{1}{10}\] Work done by B in one day \[=\frac{1}{15}\] And work done by C in one day \[=\frac{1}{12}\] \[\therefore \] Work done by A, B and C in one day \[=\frac{1}{10}+\frac{1}{15}+\frac{1}{12}=\frac{15}{60}=\frac{1}{4}\] Therefore, the whole work done by A, B and C together in 4 days.You need to login to perform this action.
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