Answer:
39.375 minutes
Explanation:
Since, each test on a page takes 5.5 minutes while each page take 0.8 minutes to read. So, for 6.25 pages. So, to give the test of 6.25 pages, time will be:

34.375 minutes.
Now, to read these 6.25 pages, time will be:

5 minutes
So, the total time taken is

39.375 minutes