Question
Pipe βAβ can fill a tank in 50 hours whereas leak
βAβ can empty it in 60 hours. If they both operate along with pipe βBβ, then the given tank gets filled in 30 hours. How much time is needed to fill the given tank if pipe βBβ and leak βAβ work together?Β ΒSolution
Let the capacity of the tank be 300 litres {LCM (50 and 60)} Efficiency of pipe βAβ = 300 Γ· 50 = 6 litres/hour Efficiency of leak βAβ = 300 Γ· 60 = 5 litres/hour Combined efficiency of pipe βAβ and leak βAβ = 6 β 5 = 1 litre/hour Combined efficiency of pipe βAβ, βBβ and leak βAβ = 300 Γ· 30 = 10 units/hour Efficiency of pipe βBβ = 10 β 1 = 9 units/hour Time taken by pipe βBβ and leak βAβ to fill the tank = 300 Γ· (9 β 5) = 75 hours
- In each of the following questions, a statement is given with a single blank. Choose the most suitable option which fits the blank in the most meaningful a...
Just as I began to get _________ about the surroundings, she applied the brakes.
Select the most appropriate option to fill in the blank.
The child was so ecstatic that she cried out as loud as she _______ .
We will have a lot of problem initially with the new and different _______ of software.
Β Β Β Β Β Β Β The lady I met at the airport was very ...
Awash in green with wisps of clouds drifting through, this tranquil village up in the mountains of Uttarakhand is truly magical. With panoramic views o...
The country must look to expand the __________ of accommodation.
Directions (104-105): Choose the word/group of words which is most similar in meaning to the word/group of words printed in bold as used in the passage...
Any further delay in helping the sector to get back on track would cause __________ damage, since the threat of the sector being taken over by bus-aggre...
Dehydration will __________________ when the body is unable to obtain enough water to maintain its biological functions.
Choose the correct answer to fill the given blank
She _____ to the gym three times a week.