Question

Salt water is slightly dense than fresh water will a boat float higher in salt water or in fresh water?

Answer 1

Salt water has very high density than the fresh water so a boat float higher in salt water as compared to fresh water.Most common example is dead sea which is saltiest sea in world.It so much salty that even a man can float in it.

Answer 2

Salt water is slightly dense than fresh water will a boat float higher in salt water 
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as the density of the water increases as we add salt to it the ship or boat will sink more 
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and also the upthrust force by the water increases