Look at the given data in the table and answer the question:
 
Duration
(in \(hr\))
0-3 4-6 7-9 10-12 13-15
Distance covered
(in \(km\))
9 19 27 35 40
 
What is the average speed of the journey for the firs\(9\) \(hours\)?
 
\(km\)/\(hr\)
 
Important!
Note: Enter your answer with 2 decimal digits.