Question
Pipe A can fill a tank in 10 hours, whereas pipe B can
empty the same tank in 12 hours. If the two pipes are operated alternately for one hour each, starting with pipe A, how much time will it take to completely fill the tank?Solution
Let the total capacity of the tank be 60 units
Efficiency of pipe ‘A’ = 60/10 = 6 units/hour
Efficiency of pipe ‘B’ = 60/12 = 5 units/hour
Amount of tank filled in 2 hours = 6 – 5 = 1 units
Therefore, amount of tank filled in (2 × 54) hours = 54 units
Therefore, remaining six unit will be filled in 6/6 = 1 hour
Total time taken = 2 × 54 + 1 = 109 hours
Who will be the new head for the Ministry of Minority Affairs as Shri Mukhtar Abbas Naqvi resigns from it?
What new regulatory framework did SEBI introduce to redefine market capitalization computation for listed companies?
How many districts were there when Haryana state was formed?
Which of the following countries has surpassed Saudi Arabia to become the second largest supplier of oil?
Articles 14 to 18 of the Indian Constitution deal with:
Which asset management company launched India's first Defence Index Fund?
Luiz Inacio Lula da Silva became President of which country?
What is the current number of tax slabs under the GST regime in India?
Who is the author of the book “Ambedkar : A Life”?
Which state in India is home to Dodabetta, the highest peak of the Nilgiri Mountains?
Relevant for Exams:
