Verified Answer :

Dannymal

1700m = 40 mins
60 mins = 1 hour
60 mins - 40 mins = 20 mins (Half of more)
1700 / 2 = 850
1700 + 850 = 2550 meter/hour

marmal

\(40 min=\frac{2}{3}h\\ 1700m--\frac{2}{3}h\\ x m\ \ \ \ --1h\\ x=2550m/h\)

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