a boat traveled 336 km downstream with the current. The trip downstream took 12 hours. write an equation to describe this relationship

We know the distance (d) equation in terms of rate (r) and time (t) as:
d = rt

We're given d = 336km and t = 12 hours, so we have:
336 km = 12t <-- this is our equation

Divide each side by 12 to solve for t:
12t/12 = 336/12
t = 28 km / hour

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