If the rate of the boat in still water is 23 mph, and the rate of the current of a river is x mph, what is the rate of the boat
in each case? a) The boat is going upstream (that is, against the current, which slows the boat down.)
b) The boat is going downstream (that is, with the current, which speeds the boat up.)
94x689=64,766 if you round it to the nearest ten you get 90x690=62100 62100 is closer to 60,000 than it is to 70,000. so you would round it down to 60,000.
