PDF chapter test TRY NOW

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 \(km\))
10 10 30 33 41
 
What is the average speed of the journey for the first \(12\) \(hours\)?
 
\(km\)/\(hr\)
 
[Note: Enter your answer with 2 decimal digits.]