Consider the following given data for a symmetric vertical curve and find the horizontal distance to the minimum elevation on the curve.

a$)153\mathrm{.}84ft$

b$)492\mathrm{.}30ft$

c$)307\mathrm{.}69ft$

d$)1333\mathrm{.}33ft$

e$)666\mathrm{.}66ft$

$L=800ft$

PVI station $=136+20$

Elevation of PVI$=Y_{\text{P}\text{V}\text{I}}=85ft$

$g1=2\mathrm{.}5\%$

$g2=+4\%$