Question
Two pipes A and B are opened together to fill a tank.
Both the pipes fill the tank in time “x”. If A separately takes 8 minute more time than “x” to fill the tank and B takes 50 minute more time than “x” to fill the tank, then find the value of x ?Solution
Let x = time (min) to fill tank together A alone: x + 8 B alone: x + 50 Rates: 1/(x+8) + 1/(x+50) = 1/x Solve: [(x+50) + (x+8)] / [(x+8)(x+50)] = 1/x (2x + 58) * x = (x+8)(x+50) 2x2 + 58x = x2 + 58x + 400 x2 = 400 x = 20 (positive time) Answer: 20 minutes
Statements:
Only wires are switches.
No wire is a board.
Only nuts are boards.
Conclusions:
I. All switches are...
Statements:
Only a few Dogs are cats
Some cats are not tiger
No tiger are rat
Only a few rat are lion
Conclusions:...
Statement : Only pant is T-shirt
Some pant is Shirt
No shirt is jacket.
Conclusion
I. All T-shirt being Shirt is a possib...
Three statements are given followed by three conclusions numbered I, |I & Ill. Assuming the statements to be true, even if they seem to be at variance w...
Statements:Some fishes are octopus.
All octopuses are crocodiles.
Some crocodiles are families.
Conclusions:I. some crocodiles are ...
Statements:Some pastries are cakes.
No cake is a pudding.
All puddings are sweets.
Conclusions:I. Some sweets are not cakes.
- In the question below some statements are given followed by two conclusions I, and II. You have to take the given statements to be true even if they seem t...
Statements:
No apple is mango
Some orange are papaya
All papaya are apple
Conclusion:
I. Some orange are not mango
- Statements:
All Dictionary are Letter
Some Letter are Words
No Word is Number
Conclusion:
I. Some Letter are not Nu... Who lives immediately above W in the same type of flat?
Relevant for Exams:
