A) 10 am
B) 10 pm
C) 11 pm
D) 11 am
Correct Answer: B
Solution :
Part of tank filled in 1 h when all three pipes are opened \[=\frac{1}{10}+\frac{1}{12}-\frac{1}{6}\] \[=\frac{6+5-10}{60}=\frac{1}{60}\] \[\therefore \] The tank will be filled in 60 h. \[\therefore \] One fourth of the tank will be filled in 15 h i.e., the tank will be filled at 10 pmYou need to login to perform this action.
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