Question
Who is the author of the book 'A Brief History of
Time'?Solution
'A Brief History of Time' is a popular-science book written by physicist Stephen Hawking and first published in 1988.
Pipe A alone fill the tank in x hours and Pipe B alone fill the tank in (x – 8) hours. If the efficiency of pipe B is triple of pipe A and pipe A fill...
Pipes X and Y can independently fill a tank in 80 minutes and 90 minutes respectively, while pipes X and Z together take 3 hours to fill the same tank. ...
Tap A can fill a tank in 15 hours. Tap B can fill 12.5% part of the same tank in 2 hours, whereas Tap C can alone empty a tank in ‘x’ hours. 5/8 par...
An inlet pipe can fill an empty tank in 40 minutes whereas an outlet pipe can empty the fully filled tank in 80 minutes. Find the time taken by both the...
A large reservoir can be filled by two pipes, A and B, in 20 minutes and 30 minutes respectively. If both pipes are opened simultaneously, after how muc...
Pipe Y is 25% less efficient than pipe X. Together, pipes X and Y can fill a tank in 15 minutes. Pipe Z alone can empty the tank ...
- Pipe P can fill a cistern in 12 hours and pipe Q in 20 hours. If both the pipes are opened in an empty cistern, how much time will they take to fill it?
Tap ‘A’ and tap ‘B’ can fill a tank in 42 hours and 30 hours, respectively. If both taps are opened together, then find the time after which tap...
Tap ‘A’ and tap ‘B’ can fill a tank in 48 hours and 30 hours, respectively. If both taps are opened together, then find the time after which tap...
There are four pipes A, B, C and D where A and B are used to fill the tank and C and D are used to empty the tank. Pipe A and C together can fill the ta...
