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Bency travelled by plane flying at an average speed of 31 \(km\)\(/\)\(h\). The plane left the airport at 10 \(:\) 16 \(h\) and reached the destination at 20 \(:\) 58 \(h\). How far did Bency travel?
 
 \(km\)
 
Important!
Note: Enter your answer with 2 decimal digits.