Question
Pipe ‘A’ can fill a tank in 50 hours whereas leak
‘A’ can empty it in 60 hours. If they both operate along with pipe ‘B’, then the given tank gets filled in 30 hours. How much time is needed to fill the given tank if pipe ‘B’ and leak ‘A’ work together?Solution
Let the capacity of the tank be 300 litres {LCM (50 and 60)} Efficiency of pipe ‘A’ = 300 ÷ 50 = 6 litres/hour Efficiency of leak ‘A’ = 300 ÷ 60 = 5 litres/hour Combined efficiency of pipe ‘A’ and leak ‘A’ = 6 – 5 = 1 litre/hour Combined efficiency of pipe ‘A’, ‘B’ and leak ‘A’ = 300 ÷ 30 = 10 units/hour Efficiency of pipe ‘B’ = 10 – 1 = 9 units/hour Time taken by pipe ‘B’ and leak ‘A’ to fill the tank = 300 ÷ (9 – 5) = 75 hours
- Select the option in which the given figure is embedded (rotation is not allowed).
Select the option in which figure is embedded.
From the given answer figures, select the one in which the question figure is hidden / embedded(rotation is not allowed).
Select the option in which the given figure is embedded.
Select the option that is embedded in the given figure: (Rotation is not allowed).
Select the option in which the given figure is embedded (rotation is not allowed).
Select the option figure that is embedded in the given figure (rotation is Not allowed).
In the question, assuming the given statements to be true, find which of the conclusion (s) among given two conclusions is /are definitely true and the...
Relevant for Exams:
