Question

Train ‘A’ travelling with a speed of 90 km/h can cross a pole in 20 seconds. If the length of train ‘B’ is 60% less than that of train ‘A’ and it can cross a pole in 16 seconds then speed (in km/h) of train ‘B’ is:

A 45 km/h
B 40 km/h
C 42 km/h
D 47 km/h
E None of these
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