in the time it takes Mako to paddle 6km upstream, she could have paddled 10 km down stream. the current's speed is 4km. how fast is mako in still water?

Answer 1

Speed = Distance/Time

Still speed - 4 = 6KM/(upstream time) [Equation for Mako Traveling Upstream, working against current]

Still speed + 4 = 10KM/(upstream time) [Equation for Mako Traveling Downstream, working with the current]

1,8*(still speed - 4) = still speed + 4

1.8*still speed - 7.2 = still speed + 4

0.8*still speed = 11.2

Still speed = 14 km