Asked by Elisa

Abby rows 10 km upstream and 10 km back in a total time of 3 hr. The speed of the river is 5km/h. Find Abby’s speed in still water.
Answered by bobpursley
she went the same distance.

(v+5)3=(v-5)10)

3v+15=10v-50
7v=65
v=65/7 km/hr

What does this have to do with quadratics?
Answered by Elisa
thats what my mathbook said. That why I needed help thank you bobpursley.
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