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Please I need The right answer for this question as soon as possible. A sag vertical...

Please I need The right answer for this question as soon as possible.

A sag vertical curve (equal tangent) has PVI at station 212+00 and elevation 540.75 ft. The initial grade is -2.5% and the final grade is +4.5%. The length of the curve is 900 ft. Determine the following,

1. Stationing of the low point, PVC, and PVT.

2. Elevation at station 213+00, PVC, low point, and PVT.

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