A train moves at 90 km/h and needs to cover a journey in

Total distance 90 2 180 km Half distance time 90 90 60 60 minutes Time left 120 60 10 50 minutes Required speed 90 50 60 108 kmh

2 hours. It halts for 10 minutes at the midpoint. What speed must it take for the second half?

A 108 km/h

B 90 km/h

C 110 km/h

D 120 km/h

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