given the following vertical curve data:G$1=+3\%,$ G$2=-1\%,$ design speed$=120$ kph$,$ vpi @$8+61\mathrm{.}50$ with an elevation equal to $250,$ compute the elevation of high point and at every $20$ m between vpc and vpt$.$ assume passing is not allowed along the curve. draw the tangent and the vertical curve with an appropriate scale.