Comprehension Passage
Direction: Go through the graph and table given below and answer the question based on it.
“A cistern is connected with eight pipes where P, Q, R and S are inlet pipes and W, X, Y and Z is outlet pipes. The graph given below depicts the time taken by the pipes individually to fill or empty the tank.”
Note: The time is given in minutes
What is the difference of the time taken by P and X to fill the tank from the time taken by R and Y?
1
20 minutes
2
24 minutes
3
60 minutes
4
36 minutes
5
None of these