Question

Train 'A' is 300 meters long and crosses a pole in 15 seconds. It completely crosses Train 'B' (opposite direction) in 10 seconds. If Train 'B' is twice as long as Train 'A', how much distance does Train 'B' cover in 20 minutes?

A 72 km
B 84 km
C 80 km
D 88 km
E 90 km
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