Comprehension Passage
Directions: Read the below data carefully and answer the following questions.
The Bar graph shows the data about work done by A, B, C, D in percentage and the table shows the number of days they worked.
B and D works alternatively, if B is twice efficient than D, then in how many days they can complete the work if B starts the work?
1
12 days
2
10 days
3
13 days
4
9 days
5
None of these