It would be 5.92 because when you round to a certain place, you base it off of the number to the right of that place. Since 1 is less than 5 you would keep everything before 1 the same and make the 1 a zero.
Answer: X = kuv/ (u+v)
that means that x(u+v)/(uv) = k, a constant. so you want x such that,
x(3+3)/(3*3) = 3(3+1)/(3*1)
x=6
