Question 1085997
Let r be the rate of the boats in still water (assuming they both go at the same rate). Then
44/r-5 -1=75/r+5
44(r+5) -r²+25=75(r-5)
44r+220+25-r²=75r-375
r²+31r-620=0
Using the quadratic formula, we get a positive value for r of 13.8300187521 kph for the boats in still water. &#9786;&#9786;&#9786;&#9786;