Question
Pipe ‘A’ can fill a tank in 20 hours while pipe
‘B’ takes 32 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 14 hours pipe ‘B’ is also opened. In how much time will the tank get filled completely?Solution
Let the total capacity of the tank be 160 units Efficiency of pipe ‘A’ = 160/20 = 8 units/hour Efficiency of pipe ‘B’ = 160/32 = 5 units/hour Tank filled in 14 hours = 14 × 8 = 112 units Therefore, required time taken to fill the remaining tank = (160 – 112)/(8 – 5) = 16 hours Therefore, total time taken = 14 + 16 = 30 hours
The 'Right to Work' plan, under the National Rural Employment Guarantee Act, 2005, was implemented in how many districts in the first phase?
What type of cyberattack involves stealing personal information by connecting a malicious USB device into your phone or laptop while charging?
Kamala Harris, Vice President Elect of USA wrote a children book, what is the name of the book?
The oldest Veda is the Rigveda, composed about _______ years ago.
The spread of which of the following diseases are not caused by mosquitoes:
(i) Malaria
(ii) Leptospirosis
(iii) Chikungunya
(iv) Typhoid
Trade liberalisation has helped India improve its _____________ in industries with medium-to-high technology content.
Which of the following elements has the highest thermal conductivity of any element and the highest light reflectance?
Who among the following athletes has won the men's 100 meters sprint at the recently concluded IAAF World Athletics Championships in London?
The 2016 World Economic Forum Annual Meeting took place in-
Relevant for Exams:
