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A boat which travels at 5.8 km/h relative to the water aims straight for the opposite bank of a 113.9 m wide river. If it reaches the opposite side 37.31 m downstream, what is the speed of the river?

km/h

A boat which travels at 5.4 km/h relative to the water aims straight for the opposite bank of a 137.8 m wide river. If it reaches the opposite side 150.5 m downstream, what is the speed of the river?

km/h

A boat which travels at 6.9 km/h relative to the water aims straight for the opposite bank of a 57.7 m wide river. If it reaches the opposite side 35.95 m downstream, what is the speed of the river?

km/h

A boat which travels at 1.8 km/h relative to the water aims straight for the opposite bank of a 85.4 m wide river. If it reaches the opposite side 104.3 m downstream, what is the speed of the river?

km/h

A boat which travels at 9.5 km/h relative to the water aims straight for the opposite bank of a 66.6 m wide river. If it reaches the opposite side 20.33 m downstream, what is the speed of the river?

km/h

A boat which travels at 4.8 km/h relative to the water aims straight for the opposite bank of a 15.5 m wide river. If it reaches the opposite side 21.63 m downstream, what is the speed of the river?

km/h