Question
Pipes ‘A’ and ‘B’ can fill a tank in 6 hours and
9 hours, respectively. If pipe ‘C’ is opened along with pipes ‘A’ and ‘B’, then the tank gets filled in 4.5 hours. Find the time taken by pipe ‘C’ to empty (2/3)th part of the same tank.Solution
Let capacity of the tank = 18 litres (lcm of 6 and 9) Efficiency of pipe ‘A’ = (18/6) = 3 litres/hour Efficiency of pipe ‘B’ = (18/9) = 2 litres/hour Efficiency of all the three pipes together = (18/4.5) = 4 litres/hour Efficiency of pipe ‘C’ = 4 – (3 + 2) = (-1) litre/hour {Negative sign shows that pipe ‘C’ is an outlet pipe} Required time taken = {(2/3) × 18)}/1 = 12 hours
In the question three statements are given, followed by three conclusions, I, II and III. You have to consider the statements to be true even if it see...
Statements: All diaries are papers.
Some papers are pens.
No pencil is a paper.
Conclusions:I. No diary is a pencil.
...
In the question below there are three statements followed by three conclusions I, II and III. You have to take the three given statements to be true e...
- Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance wi...
In each question below are given three statements followed by three conclusions numbered I, II and III. You have to take the two given statements to be...
In the question below are given some statements followed by some conclusions. You have to take the given statements to be true even if they seem to be...
Statements:
All Roses are Lotus
A few Lotus are Sunflower
No Sunflower are Tulip
Conclusions:
I. A few Tulip be...
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 see...
In the question below there are three statements followed by two conclusions I and II. You have to take the three given statements to be true even if t...
I n each question three statements followed by three conclusions numbered I, II and III have been given. You have to take the given statements to be tru...
Relevant for Exams:
