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The speed of a boat is that of the current of water is 30:7. The boat goes along with the current in 4 hours 12 minutes. It will come back in

A 9(4/5) hrs

B 7(1/9) hrs

C 6(3/4) hrs

D 4(1/3) hrs

E None of these

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Relevant for Exams:

IBPS RRB Scale 2

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