A boatman goes 2 Km aganist the current of the stream in 2 hour and goes 1 Km along the current in 20 minutes. How long will it take to go 5 Km in stationary water?
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A boatman goes 2 Km aganist the current of the stream in 2 hour and goes 1 Km along the current in 20 minutes. How long will it take to go 5 Km in stationary water 2 hr 30 min.