PDF chapter test TRY NOW

Look at the given data in the table and answer the question:
 
Duration
(in hr)
0-4 5-8 9-12 13-16 17-20
Distance covered
(in km)
7 14 22 31 49
 
What is the average speed of the journey for the firs12 hours?
 
km/hr
 
Important!
Note: Enter your answer with 2 decimal digits. 
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