The speed of a boat in still water is 35 m/s and the speed of the stream is 54 km/h. In 1/75 hours, how much distance in km will that boat cover moving upstream?

960

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0.96

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9.6

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Solution

The correct option is B 0.96
1/75 hours = 3600/75 seconds = 48 seconds
Speed of the boat = 35 m/s
Speed of the current = 54 km/h = 54 × (5/18) m/s = 15 m/s
As the boat is moving upstream, the effective speed will be (35 – 15) m/s = 20 m/s
So, distance covered = 48 × 20 m = 960 m = 0.96 km

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The speed of a boat in still water is 35 m/s and the speed of the stream is 54 km/h. In 1/75 hours, how much distance in km will that boat cover moving upstream?

The correct option is B 0.961/75 hours = 3600/75 seconds = 48 seconds Speed of the boat = 35 m/s Speed of the current = 54 km/h = 54 × (5/18) m/s = 15 m/s As the boat is moving upstream, the effective speed will be (35 – 15) m/s = 20 m/s So, distance covered = 48 × 20 m = 960 m = 0.96 km

The correct option is B 0.96
1/75 hours = 3600/75 seconds = 48 seconds
Speed of the boat = 35 m/s
Speed of the current = 54 km/h = 54 × (5/18) m/s = 15 m/s
As the boat is moving upstream, the effective speed will be (35 – 15) m/s = 20 m/s
So, distance covered = 48 × 20 m = 960 m = 0.96 km