A) 60 min
B) 90 min
C) 115 min
D) None of these
Correct Answer: A
Solution :
Part filled by pipe A in 1 min \[=\frac{1}{36}\] Part filled by pipe B in 1 min \[=\frac{1}{45}\] \[\therefore \]Total water dropped in the tank in 1min \[=\frac{1}{36}+\frac{1}{45}\] Water leaked out in 1 min by C \[=\frac{1}{30}\] \[\therefore \]Total tank filled in min \[=\frac{1}{45}+\frac{1}{36}-\frac{1}{30}=\frac{4+5-6}{180}=\frac{1}{60}\] Hence, the tank will be filled in 60 min.You need to login to perform this action.
You will be redirected in
3 sec