The fibonacci spiral appears to be in everyday items such as plants to snail shells. It's basically a numbering system.an example of the Fibonacci sequences is it applies the growth of every living things. For example, rose petals have a Fibonacci number of petals.
10 × 75 = 750 minutes to file 100% of the files. (Approximately 12.5 hours)
= 0.7
70% of these files = 750 × 0.7 = 525 minutes.
Converting 525 minutes into hours, Jan would to take 8.75 hours to file 70% of the files.