Question

Train 'R' starts from Lucknow to Kanpur at 5:00
a.m. Train 'S' starts from Kanpur to Lucknow at 7:00
a.m., traveling at 50 km/h. They cross each other at 12:00 noon. The distance between the cities is 550 km. Find the speed of train 'R'.

A 42.86 km/h
B 53.33 km/h
C 73.33 km/h
D 33.88 km/h
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