Comprehension Passage
Directions: Study the following information carefully and answer based on it.
The bar graph given below shows the number of days taken by A alone to complete 4 different projects i.e. P, Q, R, and S and the time taken by A and only one other project partner working together to complete each of the 4 different projects.
Note - (i) B, C, D and E partner up with A for projects P, Q, R and S respectively.
(ii) The efficiency of a given person is the same irrespective of the type of project they work on.

Number of days taken by A and his project partner together to complete the work:-
| Project | P | Q | R | S |
| Number of Days | 21 | 17.5 | 42 | 35 |
On Project P, if B alone worked for 17.5 days. Then the remaining work can be completed by A alone in how many days ?
1
22 days
2
35 days
3
25 days
4
18 days
5
32 days