Question 289955

So where is your work? You didn't really do it. No surprise.
6/(x)+6/(x+9)=1
(6*(x+9)+6x)/x^2+9x=1
6x+54+6x=x^2+9x
12x+54=x^2+9x
0=x^2-3x-54
0=(x-9)*(x+6)
x=9
x=-6
can not  have neg time
x=9
6/9+6/18
2/3+1/3=1
Juanita does 2/3 and Rick does 1/3