Calculate the horizontal distance $($in full stations$)$ from high point of an equal

tangent parabolic vertical curve to BVC:

$g1=+2\mathrm{.}24\%$

$g2=-1\mathrm{.}76\%$

$L=500$

$140$

$1\mathrm{.}4$

$280$

$2\mathrm{.}8$