Question
Pipe ‘A’ can fill a tank in 60 hours whereas leak
‘A’ can empty it in 70 hours. If they both operate along with pipe ‘B’, then the given tank gets filled in 35 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 420 litres {LCM (60 and 70)} Efficiency of pipe ‘A’ = 420 ÷ 60 = 7 litres/hour Efficiency of leak ‘A’ = 420 ÷ 70 = 6 litres/hour Combined efficiency of pipe ‘A’ and leak ‘A’ = 7 – 6 = 1 litre/hour Combined efficiency of pipe ‘A’, ‘B’ and leak ‘A’ = 420 ÷ 35 = 12 units/hour Efficiency of pipe ‘B’ = 12 – 1 = 11 units/hour Time taken by pipe ‘B’ and leak ‘A’ to fill the tank = 420 ÷ (11 – 6) = 84 hours
Who has been appointed as the new Secretary of the Competition Commission of India (CCI)?
Tata Power Solar Systems Ltd has collaborated with which bank to ease the financing of rooftop solar installations and EV charging stations?
Who among the following broke the national record in the men’s triple jump event at an athletics meet in Havana, Cuba in May 2023?
Who administers the oath of office to the Vice President of India?
Consider the following statements about LCH Prachand:
1. It is India’s first indigenous multi-role combat helicopter.
2. It is equipped ...
Which country will host the 'FIDE World Championship Match 2024' between India's D Gukesh and China's Ding Liren?
Which company has launched the world's first Generative AI tool for insurance?
During which specific Five-Year Plan in India was the Blue Revolution, also known as the Nili Kranti Mission, initiated?
In which city were the first-ever methanol-powered buses introduced by Nitin Gadkari?
Who inaugurated the eMigrate V2.0 web portal and mobile app in Delhi?
Relevant for Exams:
