Let the second pipe can fill tank in x hours So, first pipe fill tank in (x-10) hours and Third pipe fill tank in (x + 10) hours According to the question, Second pipe and third pipe together take 2 hour more time to fill the tank from first pipe. So time taken by second pipe third pipe together = (x – 10 + 2) hours = (x – 8) hours 1/x + 1/(x +10) = 1/(x -8) (x +10 + x )/(x2+ 10 x) = 1/(x - 8) (x – 8) (2x + 10) = x2+ 10x 2x2+ 10x - 16x – 80 = x2+ 10x x2 - 16x – 80 = 0 x2 - 20x + 4x – 80 = 0 x(x – 20) + 4(x – 20) = 0 (x – 20) (x + 4) = 0 x = - 4, 20 So second pipe can fill the tank in 20 hours alone.
What is the shortcut key for ‘Redo’?
Routing is done on which layer?
World Wide Web is a collection of all information, resources, pictures, sounds and multimedia on the internet which is accessed through
.......... are set of rules and procedures to control the data transmission over the internet
What is the mascot of Linux Operating System ?
A set of possible data values is called
Fourth generation of computer system is based on ?
Which of the following is the slowest Internet connection?
Select all the text in MSWord document by:
Which menu option is used to add Header and Footer in a document?