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IBPS RRB Officer Scale 1 Exam 7 Aug 2021 Prelims Shift 3 Paper

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Question : 77

Total: 80

A boat moving downstream 28 km in 4 hours and upstream 20 km in 5 hours. Find the ratio between the speed of the stream and speed of a boat in still water

3 : 11
11 : 13
8 : 3
8 : 11
3 : 8

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