To answer this item, we simply have to use the proper conversion factors and dimensional analysis.
Note that in a day, there are 24 hours which has 60 minutes in it each. Calculating for the total number of minutes.
number of minutes = (2 days)(24 hour/day)(60 minutes/hour)
number of minutes = 2880 minutes
Then, divide the answer by the duration of each tribute
number of tributes = (2880 minutes)/ (4 minutes/tribute)
number of tributes = 720 tributes
Hence, the answer is 720 tributes