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A boat aims straight for the opposite bank of a 108.4 m wide river which is flowing with an average speed of /h river. If it reaches the opposite side 50.28 m downstream, what is the speed of the boat relative to the water?

km/h

A boat aims straight for the opposite bank of a 63.3 m wide river which is flowing with an average speed of /h river. If it reaches the opposite side 189.9 m downstream, what is the speed of the boat relative to the water?

A boat aims straight for the opposite bank of a 139.1 m wide river which is flowing with an average speed of /h river. If it reaches the opposite side 34.34 m downstream, what is the speed of the boat relative to the water?

A boat aims straight for the opposite bank of a 60 m wide river which is flowing with an average speed of /h river. If it reaches the opposite side 74.57 m downstream, what is the speed of the boat relative to the water?

A boat aims straight for the opposite bank of a 97.8 m wide river which is flowing with an average speed of /h river. If it reaches the opposite side 28.11 m downstream, what is the speed of the boat relative to the water?

A boat aims straight for the opposite bank of a 145.8 m wide river which is flowing with an average speed of /h river. If it reaches the opposite side 54.36 m downstream, what is the speed of the boat relative to the water?