Comprehension Passage
Directions: Read the below data carefully and answer the following questions.
The pie chart shows the days (in degree) taken by A to complete the work P, Q, R, S respectively.
The table shows the ratio of efficiency of A and B respectively to do all four works.
During working on work R, B works 25% of his efficiency, if A takes 180 days to complete all the work, then in how many days B can complete 50% of the work R?
1
15
2
25
3
35
4
Can't be determined
5
None of these