The fisherman on the boat moves up the river. Under the bridge, he drops a bottle...

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The fisherman on the boat moves up the river. Under the bridge, he drops a bottle into the water. Half an hour later, the fisherman turns back, moves down the river and finds the bottle 5 km down the flow from the bridge. What is the speed of the river if the speed of the boat is constant? The fisherman on the boat moves up the river. Under the bridge, he drops a bottle into the water. Half an hour later, the fisherman turns back, moves down the river and finds the bottle 5 km down the flow from the bridge. What is the speed of the river if the speed of the boat is constant?

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Heres how to solve the problem Let b be the speed of the boat in still water kmh r be the speed of t... View the full answer