A vertical parabolic curve isto be used as a sag curve, and it is desired to know the locationand elevation of the low point. The curve is 750-ft long,and the minus grade of 3.6 percent intersects the plus grade of 6.2percent at station 240 + 80.00. Calculate the low point of thecurve if the intersection at station 240 + 80.00 is at elevation426.84.